cc3200: Add I2C module. Only master mode is currently supported.
This commit is contained in:
danicampora
parent
601c814603
commit
99f3f6b5de
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@ -18,6 +18,7 @@ APP_INC += -Iutil
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APP_INC += -Ibootmgr
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APP_INC += -I$(PY_SRC)
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APP_INC += -I$(BUILD)
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APP_INC += -I$(BUILD)/genhdr
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APP_INC += -I../lib/fatfs
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APP_INC += -I../lib/mp-readline
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APP_INC += -I../stmhal
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@ -89,6 +90,7 @@ APP_MODS_SRC_C = $(addprefix mods/,\
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modutime.c \
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modwlan.c \
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pybextint.c \
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pybi2c.c \
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pybpin.c \
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pybrtc.c \
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pybsystick.c \
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@ -112,7 +112,7 @@ DRESULT sflash_disk_read(BYTE *buff, DWORD sector, UINT count) {
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return STA_NOINIT;
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}
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if (sector + count > SFLASH_SECTOR_COUNT || count == 0) {
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if ((sector + count > SFLASH_SECTOR_COUNT) || (count == 0)) {
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return RES_PARERR;
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}
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@ -145,7 +145,8 @@ DRESULT sflash_disk_write(const BYTE *buff, DWORD sector, UINT count) {
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return STA_NOINIT;
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}
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if (sector + count > SFLASH_SECTOR_COUNT || count == 0) {
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if ((sector + count > SFLASH_SECTOR_COUNT) || (count == 0)) {
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sflash_disk_flush();
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return RES_PARERR;
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}
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@ -169,10 +169,8 @@ _I2CIntNumberGet(uint32_t ui32Base)
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//
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//*****************************************************************************
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void
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I2CMasterInitExpClk(uint32_t ui32Base, uint32_t ui32I2CClk,
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bool bFast)
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I2CMasterInitExpClk(uint32_t ui32Base, uint32_t ui32SCLFreq)
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{
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uint32_t ui32SCLFreq;
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uint32_t ui32TPR;
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//
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@ -185,25 +183,13 @@ I2CMasterInitExpClk(uint32_t ui32Base, uint32_t ui32I2CClk,
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//
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I2CMasterEnable(ui32Base);
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//
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// Get the desired SCL speed.
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//
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if(bFast == true)
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{
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ui32SCLFreq = 400000;
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}
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else
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{
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ui32SCLFreq = 100000;
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}
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//
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// Compute the clock divider that achieves the fastest speed less than or
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// equal to the desired speed. The numerator is biased to favor a larger
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// clock divider so that the resulting clock is always less than or equal
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// to the desired clock, never greater.
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//
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ui32TPR = ((ui32I2CClk + (2 * 10 * ui32SCLFreq) - 1) /
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ui32TPR = ((80000000 + (2 * 10 * ui32SCLFreq) - 1) /
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(2 * 10 * ui32SCLFreq)) - 1;
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HWREG(ui32Base + I2C_O_MTPR) = ui32TPR;
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@ -213,7 +199,7 @@ I2CMasterInitExpClk(uint32_t ui32Base, uint32_t ui32I2CClk,
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//
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if(HWREG(ui32Base + I2C_O_PP) & I2C_PP_HS)
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{
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ui32TPR = ((ui32I2CClk + (2 * 3 * 3400000) - 1) /
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ui32TPR = ((80000000 + (2 * 3 * 3400000) - 1) /
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(2 * 3 * 3400000)) - 1;
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HWREG(ui32Base + I2C_O_MTPR) = I2C_MTPR_HS | ui32TPR;
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}
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@ -309,8 +309,7 @@ extern void I2CMasterDataPut(uint32_t ui32Base, uint8_t ui8Data);
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extern void I2CMasterDisable(uint32_t ui32Base);
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extern void I2CMasterEnable(uint32_t ui32Base);
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extern uint32_t I2CMasterErr(uint32_t ui32Base);
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extern void I2CMasterInitExpClk(uint32_t ui32Base, uint32_t ui32I2CClk,
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bool bFast);
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extern void I2CMasterInitExpClk(uint32_t ui32Base, uint32_t ui32SCLFreq);
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extern void I2CMasterIntClear(uint32_t ui32Base);
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extern void I2CMasterIntDisable(uint32_t ui32Base);
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extern void I2CMasterIntEnable(uint32_t ui32Base);
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@ -84,4 +84,5 @@
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#undef ROM_SPIConfigSetExpClk
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#undef ROM_GPIODirModeGet
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#undef ROM_GPIOIntTypeGet
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#undef ROM_I2CMasterInitExpClk
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@ -60,3 +60,13 @@ const pin_obj_t *pin_find_named_pin(const mp_obj_dict_t *named_pins, mp_obj_t na
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}
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return NULL;
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}
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const pin_obj_t *pin_find_pin(const mp_obj_dict_t *named_pins, uint pin_num) {
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mp_map_t *named_map = mp_obj_dict_get_map((mp_obj_t)named_pins);
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for (uint i = 0; i < named_map->used; i++) {
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if (((pin_obj_t *)named_map->table[i].value)->pin_num == pin_num) {
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return named_map->table[i].value;
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}
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}
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return NULL;
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}
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@ -62,6 +62,8 @@
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#include "mpexception.h"
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#include "random.h"
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#include "pybextint.h"
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#include "pybi2c.h"
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#include "utils.h"
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#ifdef DEBUG
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@ -218,10 +220,7 @@ STATIC MP_DEFINE_CONST_FUN_OBJ_1(pyb_delay_obj, pyb_delay);
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STATIC mp_obj_t pyb_udelay(mp_obj_t usec_in) {
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mp_int_t usec = mp_obj_get_int(usec_in);
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if (usec > 0) {
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uint32_t count = 0;
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const uint32_t utime = ((HAL_FCPU_HZ / 1000000) * (usec / 4));
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while (++count <= utime) {
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}
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UtilsDelay(UTILS_DELAY_US_TO_COUNT(usec));
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}
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return mp_const_none;
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}
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@ -261,6 +260,17 @@ STATIC mp_obj_t pyb_repl_uart(uint n_args, const mp_obj_t *args) {
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(pyb_repl_uart_obj, 0, 1, pyb_repl_uart);
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/// \function mkdisk('path')
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/// Formats the selected drive, useful when the filesystem has been damaged beyond repair
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STATIC mp_obj_t pyb_mkdisk(mp_obj_t path_o) {
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const char *path = mp_obj_str_get_str(path_o);
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if (FR_OK != f_mkfs(path, 1, 0)) {
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nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, mpexception_os_operation_failed));
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}
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return mp_const_none;
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_1(pyb_mkdisk_obj, pyb_mkdisk);
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MP_DECLARE_CONST_FUN_OBJ(pyb_main_obj); // defined in main.c
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STATIC const mp_map_elem_t pyb_module_globals_table[] = {
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@ -291,8 +301,7 @@ STATIC const mp_map_elem_t pyb_module_globals_table[] = {
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{ MP_OBJ_NEW_QSTR(MP_QSTR_delay), (mp_obj_t)&pyb_delay_obj },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_udelay), (mp_obj_t)&pyb_udelay_obj },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_sync), (mp_obj_t)&pyb_sync_obj },
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//{ MP_OBJ_NEW_QSTR(MP_QSTR_Timer), (mp_obj_t)&pyb_timer_type },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_mkdisk), (mp_obj_t)&pyb_mkdisk_obj },
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#if MICROPY_HW_ENABLE_RNG
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{ MP_OBJ_NEW_QSTR(MP_QSTR_rng), (mp_obj_t)&pyb_rng_get_obj },
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@ -304,7 +313,7 @@ STATIC const mp_map_elem_t pyb_module_globals_table[] = {
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{ MP_OBJ_NEW_QSTR(MP_QSTR_Pin), (mp_obj_t)&pin_type },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_ExtInt), (mp_obj_t)&extint_type },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_I2C), (mp_obj_t)&pyb_i2c_type },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_UART), (mp_obj_t)&pyb_uart_type },
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};
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@ -283,7 +283,7 @@ extint_obj_t* extint_register(mp_obj_t pin_obj, uint32_t intmode, uint32_t pull,
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intmode != GPIO_BOTH_EDGES &&
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intmode != GPIO_LOW_LEVEL &&
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intmode != GPIO_HIGH_LEVEL) {
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nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, mpexception_value_invalid_arguments));
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nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError, mpexception_value_invalid_arguments));
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}
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if (pull != PIN_TYPE_STD &&
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pull != PIN_TYPE_STD_PU &&
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@ -291,7 +291,7 @@ extint_obj_t* extint_register(mp_obj_t pin_obj, uint32_t intmode, uint32_t pull,
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pull != PIN_TYPE_OD &&
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pull != PIN_TYPE_OD_PU &&
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pull != PIN_TYPE_OD_PD) {
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nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, mpexception_value_invalid_arguments));
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nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError, mpexception_value_invalid_arguments));
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}
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if (NULL == (self = extint_find(pin->port, pin->bit))) {
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@ -0,0 +1,637 @@
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/*
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* This file is part of the Micro Python project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2013, 2014 Damien P. George
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* Copyright (c) 2015 Daniel Campora
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <stdio.h>
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#include <string.h>
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#include "py/mpstate.h"
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#include "mpconfig.h"
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#include MICROPY_HAL_H
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#include "nlr.h"
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#include "misc.h"
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#include "qstr.h"
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#include "obj.h"
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#include "runtime.h"
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#include "bufhelper.h"
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#include "inc/hw_types.h"
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#include "inc/hw_i2c.h"
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#include "inc/hw_ints.h"
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#include "inc/hw_memmap.h"
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#include "rom_map.h"
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#include "pin.h"
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#include "prcm.h"
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#include "i2c.h"
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#include "pybi2c.h"
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#include "mpexception.h"
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/// \moduleref pyb
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/// \class I2C - a two-wire serial protocol
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///
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/// I2C is a two-wire protocol for communicating between devices. At the physical
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/// level it consists of 2 wires: SCL and SDA, the clock and data lines respectively.
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///
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/// I2C objects are created attached to a specific bus. They can be initialised
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/// when created, or initialised later on:
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///
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/// from pyb import I2C
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///
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/// i2c = I2C() # create
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/// i2c = I2C(I2C.MASTER) # create and init as a master
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/// i2c.init(I2C.MASTER, baudrate=20000) # init as a master
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/// i2c.deinit() # turn off the peripheral
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///
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/// Printing the i2c object gives you information about its configuration.
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///
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/// Basic methods for slave are send and recv:
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///
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/// i2c.send('abc') # send 3 bytes
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/// i2c.send(0x42) # send a single byte, given by the number
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/// data = i2c.recv(3) # receive 3 bytes
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///
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/// To receive inplace, first create a bytearray:
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///
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/// data = bytearray(3) # create a buffer
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/// i2c.recv(data) # receive 3 bytes, writing them into data
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///
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/// You can specify a timeout (in ms):
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///
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/// i2c.send(b'123', timeout=20) # timout after 20ms if the other end is not responding
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///
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/// A master must specify the recipient's address:
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///
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/// i2c.init(I2C.MASTER)
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/// i2c.send('123', 0x42) # send 3 bytes to slave with address 0x42
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/// i2c.send(b'456', addr=0x42) # keyword for address
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///
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/// Master also has other methods:
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///
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/// i2c.is_ready(0x42) # check if slave 0x42 is ready
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/// i2c.scan() # scan for slaves on the bus, returning
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/// # a list of valid addresses
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/// i2c.mem_read(3, 0x42, 2) # read 3 bytes from memory of slave 0x42,
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/// # starting at address 2 in the slave
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/// i2c.mem_write('abc', 0x42, 2, timeout=10)
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/******************************************************************************
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DEFINE CONSTANTS
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******************************************************************************/
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#define PYBI2C_MODE_DISABLED (-1)
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#define PYBI2C_MODE_MASTER (0)
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#define PYBI2C_MODE_SLAVE (1)
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#define PYBI2C_DEF_TIMEOUT_MS (7)
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#define PYBI2C_TIMEOUT_TO_COUNT(to_ms, baud) (((baud) * to_ms) / 16000)
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#define RET_IF_ERR(Func) { \
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if (!Func) { \
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return false; \
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} \
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}
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/******************************************************************************
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DEFINE PUBLIC FUNCTIONS
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******************************************************************************/
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void i2c_init0(void) {
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MP_STATE_PORT(pyb_i2c_obj) = NULL;
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}
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// only master mode is available for the moment
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void i2c_init (uint mode, uint slvaddr, uint baudrate) {
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// Enable the I2C Peripheral
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MAP_PRCMPeripheralClkEnable(PRCM_I2CA0, PRCM_RUN_MODE_CLK | PRCM_SLP_MODE_CLK);
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MAP_PRCMPeripheralReset(PRCM_I2CA0);
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// Configure I2C module with the specified baudrate
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MAP_I2CMasterInitExpClk(I2CA0_BASE, baudrate);
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}
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void i2c_deinit(void) {
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MAP_I2CMasterDisable(I2CA0_BASE);
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MAP_PRCMPeripheralClkDisable(PRCM_I2CA0, PRCM_RUN_MODE_CLK | PRCM_SLP_MODE_CLK);
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}
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/******************************************************************************/
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/* Micro Python bindings */
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/******************************************************************************/
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typedef struct _pyb_i2c_obj_t {
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mp_obj_base_t base;
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int mode;
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union {
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uint baudrate;
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byte slvaddr;
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};
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} pyb_i2c_obj_t;
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STATIC bool pybI2C_transaction(uint cmd, uint timeout) {
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// Clear all interrupts
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MAP_I2CMasterIntClearEx(I2CA0_BASE, MAP_I2CMasterIntStatusEx(I2CA0_BASE, false));
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// Set the time-out. Not to be used with breakpoints.
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MAP_I2CMasterTimeoutSet(I2CA0_BASE, timeout);
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// Initiate the transfer.
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MAP_I2CMasterControl(I2CA0_BASE, cmd);
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// Wait until the current byte has been transferred.
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// Poll on the raw interrupt status.
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while ((MAP_I2CMasterIntStatusEx(I2CA0_BASE, false) & (I2C_MASTER_INT_DATA | I2C_MASTER_INT_TIMEOUT)) == 0);
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// Check for any errors in transfer
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if (MAP_I2CMasterErr(I2CA0_BASE) != I2C_MASTER_ERR_NONE) {
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switch(cmd) {
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case I2C_MASTER_CMD_BURST_SEND_START:
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case I2C_MASTER_CMD_BURST_SEND_CONT:
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case I2C_MASTER_CMD_BURST_SEND_STOP:
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MAP_I2CMasterControl(I2CA0_BASE, I2C_MASTER_CMD_BURST_SEND_ERROR_STOP);
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break;
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case I2C_MASTER_CMD_BURST_RECEIVE_START:
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case I2C_MASTER_CMD_BURST_RECEIVE_CONT:
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case I2C_MASTER_CMD_BURST_RECEIVE_FINISH:
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MAP_I2CMasterControl(I2CA0_BASE, I2C_MASTER_CMD_BURST_RECEIVE_ERROR_STOP);
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break;
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default:
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break;
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}
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return false;
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}
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return true;
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}
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STATIC bool pybI2C_Write(byte devAddr, byte *data, uint len, bool stop, uint timeout) {
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// Set I2C codec slave address
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MAP_I2CMasterSlaveAddrSet(I2CA0_BASE, devAddr, false);
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// Write the first byte to the controller.
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MAP_I2CMasterDataPut(I2CA0_BASE, *data++);
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// Initiate the transfer.
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RET_IF_ERR(pybI2C_transaction(I2C_MASTER_CMD_BURST_SEND_START, timeout));
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// Loop until the completion of transfer or error
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while (--len) {
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// Write the next byte of data
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MAP_I2CMasterDataPut(I2CA0_BASE, *data++);
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// Transact over I2C to send the byte
|
||||
RET_IF_ERR(pybI2C_transaction(I2C_MASTER_CMD_BURST_SEND_CONT, timeout));
|
||||
}
|
||||
|
||||
// If a stop bit is to be sent, send it.
|
||||
if (stop) {
|
||||
RET_IF_ERR(pybI2C_transaction(I2C_MASTER_CMD_BURST_SEND_STOP, timeout));
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
STATIC bool pybI2C_Read(byte devAddr, byte *data, uint len, uint timeout) {
|
||||
uint cmd;
|
||||
|
||||
// Set I2C codec slave address
|
||||
MAP_I2CMasterSlaveAddrSet(I2CA0_BASE, devAddr, true);
|
||||
|
||||
// Check if its a single receive or burst receive
|
||||
if (len > 1) {
|
||||
// Initiate a burst receive sequence
|
||||
cmd = I2C_MASTER_CMD_BURST_RECEIVE_START;
|
||||
}
|
||||
else {
|
||||
// Configure for a single receive
|
||||
cmd = I2C_MASTER_CMD_SINGLE_RECEIVE;
|
||||
}
|
||||
|
||||
// Initiate the transfer.
|
||||
RET_IF_ERR(pybI2C_transaction(cmd, timeout));
|
||||
// Decrement the count
|
||||
len--;
|
||||
// Loop until the completion of reception or error
|
||||
while (len) {
|
||||
// Receive the byte over I2C
|
||||
*data++ = MAP_I2CMasterDataGet(I2CA0_BASE);
|
||||
if (--len) {
|
||||
// Continue with reception
|
||||
RET_IF_ERR(pybI2C_transaction(I2C_MASTER_CMD_BURST_RECEIVE_CONT, timeout));
|
||||
}
|
||||
else {
|
||||
// Complete the last reception
|
||||
RET_IF_ERR(pybI2C_transaction(I2C_MASTER_CMD_BURST_RECEIVE_FINISH, timeout));
|
||||
}
|
||||
}
|
||||
|
||||
// Receive the last byte over I2C
|
||||
*data = MAP_I2CMasterDataGet(I2CA0_BASE);
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
STATIC bool pybI2C_ScanDevice(byte devAddr, uint timeout) {
|
||||
// Set I2C codec slave address
|
||||
MAP_I2CMasterSlaveAddrSet(I2CA0_BASE, devAddr, true);
|
||||
// Initiate the transfer.
|
||||
RET_IF_ERR(pybI2C_transaction(I2C_MASTER_CMD_SINGLE_RECEIVE, timeout));
|
||||
// Since this is a hack, send the stop bit anyway
|
||||
MAP_I2CMasterControl(I2CA0_BASE, I2C_MASTER_CMD_BURST_SEND_ERROR_STOP);
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
STATIC void pyb_i2c_print(void (*print)(void *env, const char *fmt, ...), void *env, mp_obj_t self_in, mp_print_kind_t kind) {
|
||||
pyb_i2c_obj_t *self = self_in;
|
||||
|
||||
print(env, "I2C0");
|
||||
if (self->mode == PYBI2C_MODE_MASTER) {
|
||||
print(env, ", I2C.MASTER, baudrate=%u)", self->baudrate);
|
||||
} else if (self->mode == PYBI2C_MODE_SLAVE) {
|
||||
print(env, ", I2C.SLAVE, addr=0x%02x)", self->slvaddr);
|
||||
}
|
||||
}
|
||||
|
||||
/// \method init(mode, *, addr=0x12, baudrate=400000)
|
||||
///
|
||||
/// Initialise the I2C bus with the given parameters:
|
||||
///
|
||||
/// - `mode` must be either `I2C.MASTER` or `I2C.SLAVE`
|
||||
/// - `addr` is the 7-bit address (only sensible for a slave)
|
||||
/// - `baudrate` is the SCL clock rate (only sensible for a master)
|
||||
STATIC const mp_arg_t pyb_i2c_init_args[] = {
|
||||
{ MP_QSTR_mode, MP_ARG_REQUIRED | MP_ARG_INT, {.u_int = PYBI2C_MODE_MASTER} },
|
||||
{ MP_QSTR_addr, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 0} },
|
||||
{ MP_QSTR_baudrate, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 400000} },
|
||||
};
|
||||
#define PYB_I2C_INIT_NUM_ARGS MP_ARRAY_SIZE(pyb_i2c_init_args)
|
||||
|
||||
STATIC mp_obj_t pyb_i2c_init_helper(pyb_i2c_obj_t *self_in, mp_uint_t n_args, const mp_obj_t *args, mp_map_t *kw_args) {
|
||||
pyb_i2c_obj_t *self = self_in;
|
||||
|
||||
// parse args
|
||||
mp_arg_val_t vals[PYB_I2C_INIT_NUM_ARGS];
|
||||
mp_arg_parse_all(n_args, args, kw_args, PYB_I2C_INIT_NUM_ARGS, pyb_i2c_init_args, vals);
|
||||
|
||||
self->mode = vals[0].u_int;
|
||||
if (self->mode != PYBI2C_MODE_MASTER) {
|
||||
// thrown an exception since only master mode is supported for now
|
||||
nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError, mpexception_value_invalid_arguments));
|
||||
}
|
||||
|
||||
if (self->mode == PYBI2C_MODE_SLAVE) {
|
||||
self->slvaddr = vals[1].u_int;
|
||||
}
|
||||
else {
|
||||
self->baudrate = MIN(vals[2].u_int, 400000);
|
||||
}
|
||||
|
||||
// init the I2C bus
|
||||
i2c_init(self->mode, self->slvaddr, self->baudrate);
|
||||
|
||||
return mp_const_none;
|
||||
}
|
||||
|
||||
/// \classmethod \constructor(bus, ...)
|
||||
///
|
||||
/// Construct an I2C object on the given bus. `bus` can be 1.
|
||||
/// With no additional parameters, the I2C object is created but not
|
||||
/// initialised (it has the settings from the last initialisation of
|
||||
/// the bus, if any). If extra arguments are given, the bus is initialised.
|
||||
/// See `init` for parameters of initialisation.
|
||||
STATIC mp_obj_t pyb_i2c_make_new(mp_obj_t type_in, mp_uint_t n_args, mp_uint_t n_kw, const mp_obj_t *args) {
|
||||
// check arguments
|
||||
mp_arg_check_num(n_args, n_kw, 1, MP_OBJ_FUN_ARGS_MAX, true);
|
||||
|
||||
// get i2c number
|
||||
mp_int_t i2c_id = mp_obj_get_int(args[0]) - 1;
|
||||
|
||||
// check i2c number
|
||||
if (i2c_id != 0) {
|
||||
nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError, mpexception_value_invalid_arguments));
|
||||
}
|
||||
|
||||
// setup the object
|
||||
pyb_i2c_obj_t *self;
|
||||
if (MP_STATE_PORT(pyb_i2c_obj) == NULL) {
|
||||
// create a new I2C object
|
||||
self = m_new_obj(pyb_i2c_obj_t);
|
||||
self->base.type = &pyb_i2c_type;
|
||||
self->mode = PYBI2C_MODE_DISABLED;
|
||||
MP_STATE_PORT(pyb_i2c_obj) = self;
|
||||
} else {
|
||||
// reference the existing I2C object
|
||||
self = MP_STATE_PORT(pyb_i2c_obj);
|
||||
}
|
||||
|
||||
if (n_args > 1 || n_kw > 0) {
|
||||
// start the peripheral
|
||||
mp_map_t kw_args;
|
||||
mp_map_init_fixed_table(&kw_args, n_kw, args + n_args);
|
||||
pyb_i2c_init_helper(self, n_args - 1, args + 1, &kw_args);
|
||||
}
|
||||
|
||||
return (mp_obj_t)self;
|
||||
}
|
||||
|
||||
STATIC mp_obj_t pyb_i2c_init(mp_uint_t n_args, const mp_obj_t *args, mp_map_t *kw_args) {
|
||||
return pyb_i2c_init_helper(args[0], n_args - 1, args + 1, kw_args);
|
||||
}
|
||||
STATIC MP_DEFINE_CONST_FUN_OBJ_KW(pyb_i2c_init_obj, 1, pyb_i2c_init);
|
||||
|
||||
/// \method deinit()
|
||||
/// Turn off the I2C bus.
|
||||
STATIC mp_obj_t pyb_i2c_deinit(mp_obj_t self_in) {
|
||||
i2c_deinit();
|
||||
return mp_const_none;
|
||||
}
|
||||
STATIC MP_DEFINE_CONST_FUN_OBJ_1(pyb_i2c_deinit_obj, pyb_i2c_deinit);
|
||||
|
||||
/// \method is_ready(addr)
|
||||
/// Check if an I2C device responds to the given address. Only valid when in master mode.
|
||||
STATIC mp_obj_t pyb_i2c_is_ready(mp_obj_t self_in, mp_obj_t i2c_addr_o) {
|
||||
pyb_i2c_obj_t *self = self_in;
|
||||
|
||||
if (self->mode != PYBI2C_MODE_MASTER) {
|
||||
nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, mpexception_os_request_not_possible));
|
||||
}
|
||||
|
||||
mp_uint_t i2c_addr = mp_obj_get_int(i2c_addr_o);
|
||||
|
||||
for (int i = 0; i < 10; i++) {
|
||||
if (pybI2C_ScanDevice(i2c_addr, PYBI2C_TIMEOUT_TO_COUNT(PYBI2C_DEF_TIMEOUT_MS, self->baudrate))) {
|
||||
return mp_const_true;
|
||||
}
|
||||
}
|
||||
|
||||
return mp_const_false;
|
||||
}
|
||||
STATIC MP_DEFINE_CONST_FUN_OBJ_2(pyb_i2c_is_ready_obj, pyb_i2c_is_ready);
|
||||
|
||||
/// \method scan()
|
||||
/// Scan all I2C addresses from 0x01 to 0x7f and return a list of those that respond.
|
||||
/// Only valid when in master mode.
|
||||
STATIC mp_obj_t pyb_i2c_scan(mp_obj_t self_in) {
|
||||
pyb_i2c_obj_t *self = self_in;
|
||||
|
||||
if (self->mode != PYBI2C_MODE_MASTER) {
|
||||
nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, mpexception_os_request_not_possible));
|
||||
}
|
||||
|
||||
mp_obj_t list = mp_obj_new_list(0, NULL);
|
||||
|
||||
for (uint addr = 1; addr <= 127; addr++) {
|
||||
for (int i = 0; i < 10; i++) {
|
||||
if (pybI2C_ScanDevice(addr, PYBI2C_TIMEOUT_TO_COUNT(PYBI2C_DEF_TIMEOUT_MS, self->baudrate))) {
|
||||
mp_obj_list_append(list, mp_obj_new_int(addr));
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return list;
|
||||
}
|
||||
STATIC MP_DEFINE_CONST_FUN_OBJ_1(pyb_i2c_scan_obj, pyb_i2c_scan);
|
||||
|
||||
/// \method send(send, addr=0x00)
|
||||
/// Send data on the bus:
|
||||
///
|
||||
/// - `send` is the data to send (an integer to send, or a buffer object)
|
||||
/// - `addr` is the address to send to (only required in master mode)
|
||||
/// - `timeout` is the timeout in milliseconds to wait for the other end to respond
|
||||
/// Return value: `None`.
|
||||
STATIC const mp_arg_t pyb_i2c_send_args[] = {
|
||||
{ MP_QSTR_send, MP_ARG_REQUIRED | MP_ARG_OBJ, {.u_obj = MP_OBJ_NULL} },
|
||||
{ MP_QSTR_addr, MP_ARG_INT, {.u_int = 0} },
|
||||
{ MP_QSTR_timeout, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 5} },
|
||||
};
|
||||
#define PYB_I2C_SEND_NUM_ARGS MP_ARRAY_SIZE(pyb_i2c_send_args)
|
||||
|
||||
STATIC mp_obj_t pyb_i2c_send(mp_uint_t n_args, const mp_obj_t *args, mp_map_t *kw_args) {
|
||||
pyb_i2c_obj_t *self = args[0];
|
||||
|
||||
// parse args
|
||||
mp_arg_val_t vals[PYB_I2C_SEND_NUM_ARGS];
|
||||
mp_arg_parse_all(n_args - 1, args + 1, kw_args, PYB_I2C_SEND_NUM_ARGS, pyb_i2c_send_args, vals);
|
||||
|
||||
// get the buffer to send from
|
||||
mp_buffer_info_t bufinfo;
|
||||
uint8_t data[1];
|
||||
pyb_buf_get_for_send(vals[0].u_obj, &bufinfo, data);
|
||||
|
||||
// send the data
|
||||
if (self->mode == PYBI2C_MODE_MASTER) {
|
||||
uint timeout = MIN(PYBI2C_TIMEOUT_TO_COUNT(vals[2].u_int, self->baudrate), 255);
|
||||
if (!pybI2C_Write(vals[1].u_int, bufinfo.buf, bufinfo.len, true, timeout)) {
|
||||
nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, mpexception_os_operation_failed));
|
||||
}
|
||||
} else {
|
||||
nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, mpexception_os_request_not_possible));
|
||||
}
|
||||
|
||||
return mp_const_none;
|
||||
}
|
||||
STATIC MP_DEFINE_CONST_FUN_OBJ_KW(pyb_i2c_send_obj, 1, pyb_i2c_send);
|
||||
|
||||
/// \method recv(recv, addr=0x00, timeout=10)
|
||||
///
|
||||
/// Receive data on the bus:
|
||||
///
|
||||
/// - `recv` can be an integer, which is the number of bytes to receive,
|
||||
/// or a mutable buffer, which will be filled with received bytes
|
||||
/// - `addr` is the address to receive from (only required in master mode)
|
||||
/// - `timeout` is the timeout in milliseconds to wait for the other end to respond
|
||||
///
|
||||
/// Return value: if `recv` is an integer then a new buffer of the bytes received,
|
||||
/// otherwise the same buffer that was passed in to `recv`.
|
||||
STATIC const mp_arg_t pyb_i2c_recv_args[] = {
|
||||
{ MP_QSTR_recv, MP_ARG_REQUIRED | MP_ARG_OBJ, {.u_obj = MP_OBJ_NULL} },
|
||||
{ MP_QSTR_addr, MP_ARG_INT, {.u_int = 0} },
|
||||
{ MP_QSTR_timeout, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 5} },
|
||||
};
|
||||
#define PYB_I2C_RECV_NUM_ARGS MP_ARRAY_SIZE(pyb_i2c_recv_args)
|
||||
|
||||
STATIC mp_obj_t pyb_i2c_recv(mp_uint_t n_args, const mp_obj_t *args, mp_map_t *kw_args) {
|
||||
pyb_i2c_obj_t *self = args[0];
|
||||
|
||||
// parse args
|
||||
mp_arg_val_t vals[PYB_I2C_RECV_NUM_ARGS];
|
||||
mp_arg_parse_all(n_args - 1, args + 1, kw_args, PYB_I2C_RECV_NUM_ARGS, pyb_i2c_recv_args, vals);
|
||||
|
||||
// get the buffer to receive into
|
||||
vstr_t vstr;
|
||||
mp_obj_t o_ret = pyb_buf_get_for_recv(vals[0].u_obj, &vstr);
|
||||
|
||||
// receive the data
|
||||
if (self->mode == PYBI2C_MODE_MASTER) {
|
||||
uint timeout = MIN(PYBI2C_TIMEOUT_TO_COUNT(vals[2].u_int, self->baudrate), 255);
|
||||
if (!pybI2C_Read(vals[1].u_int, (byte *)vstr.buf, vstr.len, timeout)) {
|
||||
nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, mpexception_os_operation_failed));
|
||||
}
|
||||
} else {
|
||||
nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, mpexception_os_request_not_possible));
|
||||
}
|
||||
|
||||
// return the received data
|
||||
if (o_ret != MP_OBJ_NULL) {
|
||||
return o_ret;
|
||||
} else {
|
||||
return mp_obj_new_str_from_vstr(&mp_type_bytes, &vstr);
|
||||
}
|
||||
}
|
||||
STATIC MP_DEFINE_CONST_FUN_OBJ_KW(pyb_i2c_recv_obj, 1, pyb_i2c_recv);
|
||||
|
||||
/// \method mem_read(data, addr, memaddr, timeout=10, addr_size=8)
|
||||
///
|
||||
/// Read from the memory of an I2C device:
|
||||
///
|
||||
/// - `data` can be an integer or a buffer to read into
|
||||
/// - `addr` is the I2C device address
|
||||
/// - `memaddr` is the memory location within the I2C device
|
||||
/// - `timeout` is the timeout in milliseconds to wait for the other end to respond
|
||||
/// - `addr_size` selects width of memaddr: 8 or 16 bits
|
||||
///
|
||||
/// Returns the read data.
|
||||
/// This is only valid in master mode.
|
||||
STATIC const mp_arg_t pyb_i2c_mem_read_args[] = {
|
||||
{ MP_QSTR_data, MP_ARG_REQUIRED | MP_ARG_OBJ, {.u_obj = MP_OBJ_NULL} },
|
||||
{ MP_QSTR_addr, MP_ARG_REQUIRED | MP_ARG_INT, {.u_int = 0} },
|
||||
{ MP_QSTR_memaddr, MP_ARG_REQUIRED | MP_ARG_INT, {.u_int = 0} },
|
||||
{ MP_QSTR_timeout, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 5} },
|
||||
{ MP_QSTR_addr_size, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 8} },
|
||||
};
|
||||
#define PYB_I2C_MEM_READ_NUM_ARGS MP_ARRAY_SIZE(pyb_i2c_mem_read_args)
|
||||
|
||||
STATIC mp_obj_t pyb_i2c_mem_read(mp_uint_t n_args, const mp_obj_t *args, mp_map_t *kw_args) {
|
||||
pyb_i2c_obj_t *self = args[0];
|
||||
|
||||
if (self->mode != PYBI2C_MODE_MASTER) {
|
||||
nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, mpexception_os_request_not_possible));
|
||||
}
|
||||
|
||||
// parse args
|
||||
mp_arg_val_t vals[PYB_I2C_MEM_READ_NUM_ARGS];
|
||||
mp_arg_parse_all(n_args - 1, args + 1, kw_args, PYB_I2C_MEM_READ_NUM_ARGS, pyb_i2c_mem_read_args, vals);
|
||||
|
||||
// get the buffer to read into
|
||||
vstr_t vstr;
|
||||
mp_obj_t o_ret = pyb_buf_get_for_recv(vals[0].u_obj, &vstr);
|
||||
|
||||
// get the addresses
|
||||
mp_uint_t i2c_addr = vals[1].u_int;
|
||||
mp_uint_t mem_addr = vals[2].u_int;
|
||||
// determine width of mem_addr (1 or 2 bytes)
|
||||
mp_uint_t mem_addr_size = vals[4].u_int >> 3;
|
||||
|
||||
// Write the register address to be read from.
|
||||
uint timeout = MIN(PYBI2C_TIMEOUT_TO_COUNT(vals[3].u_int, self->baudrate), 255);
|
||||
if (pybI2C_Write (i2c_addr, (byte *)&mem_addr, mem_addr_size, false, timeout)) {
|
||||
// Read the specified length of data
|
||||
if (pybI2C_Read (i2c_addr, (byte *)vstr.buf, vstr.len, timeout)) {
|
||||
// return the read data
|
||||
if (o_ret != MP_OBJ_NULL) {
|
||||
return o_ret;
|
||||
} else {
|
||||
return mp_obj_new_str_from_vstr(&mp_type_bytes, &vstr);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, mpexception_os_operation_failed));
|
||||
|
||||
return mp_const_none;
|
||||
}
|
||||
STATIC MP_DEFINE_CONST_FUN_OBJ_KW(pyb_i2c_mem_read_obj, 1, pyb_i2c_mem_read);
|
||||
|
||||
/// \method mem_write(data, addr, memaddr, timeout=10, addr_size=8)
|
||||
///
|
||||
/// Write to the memory of an I2C device:
|
||||
///
|
||||
/// - `data` can be an integer or a buffer to write from
|
||||
/// - `addr` is the I2C device address
|
||||
/// - `memaddr` is the memory location within the I2C device
|
||||
/// - `timeout` is the timeout in milliseconds to wait for the other end to respond
|
||||
/// - `addr_size` selects width of memaddr: 8 or 16 bits
|
||||
///
|
||||
/// Returns `None`.
|
||||
/// This is only valid in master mode.
|
||||
STATIC mp_obj_t pyb_i2c_mem_write(mp_uint_t n_args, const mp_obj_t *args, mp_map_t *kw_args) {
|
||||
pyb_i2c_obj_t *self = args[0];
|
||||
|
||||
if (self->mode != PYBI2C_MODE_MASTER) {
|
||||
nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, mpexception_os_request_not_possible));
|
||||
}
|
||||
|
||||
// parse args (same as mem_read)
|
||||
mp_arg_val_t vals[PYB_I2C_MEM_READ_NUM_ARGS];
|
||||
mp_arg_parse_all(n_args - 1, args + 1, kw_args, PYB_I2C_MEM_READ_NUM_ARGS, pyb_i2c_mem_read_args, vals);
|
||||
|
||||
// get the buffer to write from
|
||||
mp_buffer_info_t bufinfo;
|
||||
uint8_t data[1];
|
||||
pyb_buf_get_for_send(vals[0].u_obj, &bufinfo, data);
|
||||
|
||||
// get the addresses
|
||||
mp_uint_t i2c_addr = vals[1].u_int;
|
||||
mp_uint_t mem_addr = vals[2].u_int;
|
||||
// determine width of mem_addr (1 or 2 bytes)
|
||||
mp_uint_t mem_addr_size = vals[4].u_int >> 3;
|
||||
|
||||
// Write the register address to be write to.
|
||||
uint timeout = MIN(PYBI2C_TIMEOUT_TO_COUNT(vals[2].u_int, self->baudrate), 255);
|
||||
if (pybI2C_Write (i2c_addr, (byte *)&mem_addr, mem_addr_size, false, timeout)) {
|
||||
// Write the specified length of data
|
||||
if (pybI2C_Write (i2c_addr, bufinfo.buf, bufinfo.len, true, timeout)) {
|
||||
return mp_const_none;
|
||||
}
|
||||
}
|
||||
|
||||
nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, mpexception_os_operation_failed));
|
||||
|
||||
return mp_const_none;
|
||||
}
|
||||
STATIC MP_DEFINE_CONST_FUN_OBJ_KW(pyb_i2c_mem_write_obj, 1, pyb_i2c_mem_write);
|
||||
|
||||
STATIC const mp_map_elem_t pyb_i2c_locals_dict_table[] = {
|
||||
// instance methods
|
||||
{ MP_OBJ_NEW_QSTR(MP_QSTR_init), (mp_obj_t)&pyb_i2c_init_obj },
|
||||
{ MP_OBJ_NEW_QSTR(MP_QSTR_deinit), (mp_obj_t)&pyb_i2c_deinit_obj },
|
||||
{ MP_OBJ_NEW_QSTR(MP_QSTR_is_ready), (mp_obj_t)&pyb_i2c_is_ready_obj },
|
||||
{ MP_OBJ_NEW_QSTR(MP_QSTR_scan), (mp_obj_t)&pyb_i2c_scan_obj },
|
||||
{ MP_OBJ_NEW_QSTR(MP_QSTR_send), (mp_obj_t)&pyb_i2c_send_obj },
|
||||
{ MP_OBJ_NEW_QSTR(MP_QSTR_recv), (mp_obj_t)&pyb_i2c_recv_obj },
|
||||
{ MP_OBJ_NEW_QSTR(MP_QSTR_mem_read), (mp_obj_t)&pyb_i2c_mem_read_obj },
|
||||
{ MP_OBJ_NEW_QSTR(MP_QSTR_mem_write), (mp_obj_t)&pyb_i2c_mem_write_obj },
|
||||
|
||||
// class constants
|
||||
/// \constant MASTER - for initialising the bus to master mode
|
||||
/// \constant SLAVE - for initialising the bus to slave mode
|
||||
{ MP_OBJ_NEW_QSTR(MP_QSTR_MASTER), MP_OBJ_NEW_SMALL_INT(PYBI2C_MODE_MASTER) },
|
||||
{ MP_OBJ_NEW_QSTR(MP_QSTR_SLAVE), MP_OBJ_NEW_SMALL_INT(PYBI2C_MODE_SLAVE) },
|
||||
};
|
||||
|
||||
STATIC MP_DEFINE_CONST_DICT(pyb_i2c_locals_dict, pyb_i2c_locals_dict_table);
|
||||
|
||||
const mp_obj_type_t pyb_i2c_type = {
|
||||
{ &mp_type_type },
|
||||
.name = MP_QSTR_I2C,
|
||||
.print = pyb_i2c_print,
|
||||
.make_new = pyb_i2c_make_new,
|
||||
.locals_dict = (mp_obj_t)&pyb_i2c_locals_dict,
|
||||
};
|
||||
|
|
@ -0,0 +1,32 @@
|
|||
/*
|
||||
* This file is part of the Micro Python project, http://micropython.org/
|
||||
*
|
||||
* The MIT License (MIT)
|
||||
*
|
||||
* Copyright (c) 2013, 2014 Damien P. George
|
||||
* Copyright (c) 2015 Daniel Campora
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
* of this software and associated documentation files (the "Software"), to deal
|
||||
* in the Software without restriction, including without limitation the rights
|
||||
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
* copies of the Software, and to permit persons to whom the Software is
|
||||
* furnished to do so, subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be included in
|
||||
* all copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||
* THE SOFTWARE.
|
||||
*/
|
||||
|
||||
extern const mp_obj_type_t pyb_i2c_type;
|
||||
|
||||
void i2c_init0(void);
|
||||
void i2c_init (uint mode, uint slvaddr, uint baudrate);
|
||||
void i2c_deinit(void);
|
||||
|
|
@ -71,11 +71,16 @@
|
|||
///
|
||||
/// g = pyb.Pin('GPIO9', 0)
|
||||
///
|
||||
/// And finally, you can also pass a pin number directly:
|
||||
///
|
||||
/// g = pyb.Pin(64, 0)
|
||||
///
|
||||
/// To summarise, the following order determines how things get mapped into
|
||||
/// an ordinal pin number:
|
||||
///
|
||||
/// 1. Directly specify a Pin object
|
||||
/// 2. Supply a string which matches a CPU port/pin
|
||||
/// 2. Supply a string which matches a CPU pin name
|
||||
/// 3. Provide a pin number
|
||||
|
||||
void pin_init0(void) {
|
||||
}
|
||||
|
|
@ -96,6 +101,16 @@ const pin_obj_t *pin_find(mp_obj_t user_obj) {
|
|||
return pin_obj;
|
||||
}
|
||||
|
||||
// See if the pin number matches a cpu pin
|
||||
mp_int_t pin_num;
|
||||
if (mp_obj_get_int_maybe(user_obj, &pin_num)) {
|
||||
// The Pins dictionary has pin indexes, so we must substract one from the value passed
|
||||
pin_obj = pin_find_pin(&pin_cpu_pins_locals_dict, (pin_num - 1));
|
||||
if (pin_obj) {
|
||||
return pin_obj;
|
||||
}
|
||||
}
|
||||
|
||||
nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError, mpexception_value_invalid_arguments));
|
||||
}
|
||||
|
||||
|
|
@ -218,9 +233,9 @@ STATIC mp_obj_t pin_make_new(mp_obj_t self_in, mp_uint_t n_args, mp_uint_t n_kw,
|
|||
/// - `Pin.OD_PD` - open drain with pull-down resistor.
|
||||
/// - `Pin.ANALOG` - configured in analog (adc) mode
|
||||
/// - `strength` can be one of:
|
||||
/// - `Pin.2MA` - 2ma drive strength;
|
||||
/// - `Pin.4MA` - 4ma drive strength;
|
||||
/// - `Pin.6MA` - 6ma drive strength;
|
||||
/// - `Pin.S2MA` - 2ma drive strength;
|
||||
/// - `Pin.S4MA` - 4ma drive strength;
|
||||
/// - `Pin.S6MA` - 6ma drive strength;
|
||||
///
|
||||
/// Returns: `None`.
|
||||
STATIC const mp_arg_t pin_init_args[] = {
|
||||
|
|
|
|||
|
|
@ -60,6 +60,7 @@ void pin_init0(void);
|
|||
void pin_config(const pin_obj_t *self, uint af, uint mode, uint type, uint strength);
|
||||
const pin_obj_t *pin_find(mp_obj_t user_obj);
|
||||
const pin_obj_t *pin_find_named_pin(const mp_obj_dict_t *named_pins, mp_obj_t name);
|
||||
const pin_obj_t *pin_find_pin(const mp_obj_dict_t *named_pins, uint pin_num);
|
||||
uint32_t pin_get_mode(const pin_obj_t *self);
|
||||
uint32_t pin_get_type(const pin_obj_t *self);
|
||||
uint32_t pin_get_strenght(const pin_obj_t *self);
|
||||
|
|
|
|||
|
|
@ -41,22 +41,18 @@
|
|||
#include "runtime.h"
|
||||
#include "stream.h"
|
||||
#include "inc/hw_types.h"
|
||||
#include "inc/hw_gpio.h"
|
||||
#include "inc/hw_ints.h"
|
||||
#include "inc/hw_memmap.h"
|
||||
#include "inc/hw_uart.h"
|
||||
#include "rom_map.h"
|
||||
#include "interrupt.h"
|
||||
#include "prcm.h"
|
||||
#include "gpio.h"
|
||||
#include "uart.h"
|
||||
#include "pin.h"
|
||||
#include "pybuart.h"
|
||||
#include "pybioctl.h"
|
||||
#include "mpexception.h"
|
||||
#include "osi.h"
|
||||
|
||||
|
||||
/// \moduleref pyb
|
||||
/// \class UART - duplex serial communication bus
|
||||
///
|
||||
|
|
@ -90,8 +86,6 @@
|
|||
///
|
||||
/// uart.any() # returns True if any characters waiting
|
||||
|
||||
|
||||
|
||||
/******************************************************************************
|
||||
DECLARE PRIVATE FUNCTIONS
|
||||
******************************************************************************/
|
||||
|
|
@ -150,16 +144,12 @@ bool uart_init2(pyb_uart_obj_t *self) {
|
|||
case PYB_UART_1:
|
||||
self->reg = UARTA0_BASE;
|
||||
uartPerh = PRCM_UARTA0;
|
||||
MAP_PinTypeUART(PIN_55, PIN_MODE_3);
|
||||
MAP_PinTypeUART(PIN_57, PIN_MODE_3);
|
||||
MAP_UARTIntRegister(UARTA0_BASE, UART0IntHandler);
|
||||
MAP_IntPrioritySet(INT_UARTA0, INT_PRIORITY_LVL_7);
|
||||
break;
|
||||
case PYB_UART_2:
|
||||
self->reg = UARTA1_BASE;
|
||||
uartPerh = PRCM_UARTA1;
|
||||
MAP_PinTypeUART(PIN_58, PIN_MODE_6);
|
||||
MAP_PinTypeUART(PIN_59, PIN_MODE_6);
|
||||
MAP_UARTIntRegister(UARTA1_BASE, UART1IntHandler);
|
||||
MAP_IntPrioritySet(INT_UARTA1, INT_PRIORITY_LVL_7);
|
||||
break;
|
||||
|
|
@ -469,9 +459,10 @@ STATIC mp_obj_t pyb_uart_make_new(mp_obj_t type_in, mp_uint_t n_args, mp_uint_t
|
|||
pyb_uart_obj_t *self;
|
||||
if (MP_STATE_PORT(pyb_uart_obj_all)[uart_id - 1] == NULL) {
|
||||
// create new UART object
|
||||
self = m_new0(pyb_uart_obj_t, 1);
|
||||
self = m_new_obj(pyb_uart_obj_t);
|
||||
self->base.type = &pyb_uart_type;
|
||||
self->uart_id = uart_id;
|
||||
self->read_buf = NULL;
|
||||
self->enabled = false;
|
||||
MP_STATE_PORT(pyb_uart_obj_all)[uart_id - 1] = self;
|
||||
} else {
|
||||
|
|
|
|||
|
|
@ -123,6 +123,7 @@ extern const struct _mp_obj_module_t mp_module_network;
|
|||
mp_obj_list_t pyb_extint_list; \
|
||||
struct _pyb_uart_obj_t *pyb_stdio_uart; \
|
||||
struct _pyb_uart_obj_t *pyb_uart_obj_all[2]; \
|
||||
struct _pyb_i2c_obj_t *pyb_i2c_obj; \
|
||||
mp_obj_list_t mod_network_nic_list; \
|
||||
|
||||
|
||||
|
|
|
|||
|
|
@ -41,6 +41,8 @@
|
|||
#include "runtime.h"
|
||||
#include "repl.h"
|
||||
#include "inc/hw_memmap.h"
|
||||
#include "inc/hw_types.h"
|
||||
#include "pin.h"
|
||||
#include "pybuart.h"
|
||||
#include "pybpin.h"
|
||||
#include "pybrtc.h"
|
||||
|
|
@ -64,6 +66,8 @@
|
|||
#include "mpexception.h"
|
||||
#include "random.h"
|
||||
#include "pybextint.h"
|
||||
#include "pybi2c.h"
|
||||
#include "pins.h"
|
||||
|
||||
/******************************************************************************
|
||||
DECLARE PRIVATE CONSTANTS
|
||||
|
|
@ -142,7 +146,13 @@ soft_reset:
|
|||
|
||||
mpexception_init0();
|
||||
uart_init0();
|
||||
pin_init0();
|
||||
i2c_init0();
|
||||
|
||||
// configure stdio uart pins with the correct af
|
||||
// param 3 ("mode") is DON'T CARE" for AFs others than GPIO
|
||||
pin_config(&pin_GPIO1, PIN_MODE_3, 0, PIN_TYPE_STD, PIN_STRENGTH_2MA);
|
||||
pin_config(&pin_GPIO2, PIN_MODE_3, 0, PIN_TYPE_STD, PIN_STRENGTH_2MA);
|
||||
// Instantiate the stdio uart
|
||||
mp_obj_t args[2] = {
|
||||
mp_obj_new_int(MICROPY_STDIO_UART),
|
||||
|
|
@ -151,7 +161,6 @@ soft_reset:
|
|||
MP_STATE_PORT(pyb_stdio_uart) = pyb_uart_type.make_new((mp_obj_t)&pyb_uart_type, MP_ARRAY_SIZE(args), 0, args);
|
||||
|
||||
readline_init0();
|
||||
pin_init0();
|
||||
extint_init0();
|
||||
mod_network_init();
|
||||
wlan_init0();
|
||||
|
|
|
|||
|
|
@ -58,6 +58,7 @@ Q(chdir)
|
|||
Q(getcwd)
|
||||
Q(listdir)
|
||||
Q(mkdir)
|
||||
Q(mkdisk)
|
||||
Q(remove)
|
||||
Q(rmdir)
|
||||
Q(unlink)
|
||||
|
|
@ -135,6 +136,26 @@ Q(FLOW_TX)
|
|||
Q(FLOW_RX)
|
||||
Q(FLOW_TXRX)
|
||||
|
||||
// for I2C class
|
||||
Q(I2C)
|
||||
Q(mode)
|
||||
Q(addr)
|
||||
Q(baudrate)
|
||||
Q(data)
|
||||
Q(memaddr)
|
||||
Q(addr_size)
|
||||
Q(timeout)
|
||||
Q(init)
|
||||
Q(deinit)
|
||||
Q(is_ready)
|
||||
Q(scan)
|
||||
Q(send)
|
||||
Q(recv)
|
||||
Q(mem_read)
|
||||
Q(mem_write)
|
||||
Q(MASTER)
|
||||
Q(SLAVE)
|
||||
|
||||
// for RTC class
|
||||
Q(RTC)
|
||||
Q(datetime)
|
||||
|
|
|
|||
Loading…
Reference in New Issue