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remove machine_i2c, machine_spi

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This micropython code is not used in circuitpython
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Jeff Epler 2020-06-14 17:00:35 -05:00 committed by Jeff Epler
parent 4f8b37042d
commit 103ad9966a
5 changed files with 0 additions and 1045 deletions
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extmod/machine_i2c.c
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@ -1,641 +0,0 @@
/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2016 Damien P. George
*
* 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.
*/
#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include "py/mperrno.h"
#include "py/mphal.h"
#include "py/runtime.h"
#include "extmod/machine_i2c.h"
#include "supervisor/shared/translate.h"
#if MICROPY_PY_MACHINE_I2C
typedef mp_machine_soft_i2c_obj_t machine_i2c_obj_t;
STATIC void mp_hal_i2c_delay(machine_i2c_obj_t *self) {
// We need to use an accurate delay to get acceptable I2C
// speeds (eg 1us should be not much more than 1us).
mp_hal_delay_us_fast(self->us_delay);
}
STATIC void mp_hal_i2c_scl_low(machine_i2c_obj_t *self) {
mp_hal_pin_od_low(self->scl);
}
STATIC int mp_hal_i2c_scl_release(machine_i2c_obj_t *self) {
uint32_t count = self->us_timeout;
mp_hal_pin_od_high(self->scl);
mp_hal_i2c_delay(self);
// For clock stretching, wait for the SCL pin to be released, with timeout.
for (; mp_hal_pin_read(self->scl) == 0 && count; --count) {
mp_hal_delay_us_fast(1);
}
if (count == 0) {
return -MP_ETIMEDOUT;
}
return 0; // success
}
STATIC void mp_hal_i2c_sda_low(machine_i2c_obj_t *self) {
mp_hal_pin_od_low(self->sda);
}
STATIC void mp_hal_i2c_sda_release(machine_i2c_obj_t *self) {
mp_hal_pin_od_high(self->sda);
}
STATIC int mp_hal_i2c_sda_read(machine_i2c_obj_t *self) {
return mp_hal_pin_read(self->sda);
}
STATIC int mp_hal_i2c_start(machine_i2c_obj_t *self) {
mp_hal_i2c_sda_release(self);
mp_hal_i2c_delay(self);
int ret = mp_hal_i2c_scl_release(self);
if (ret != 0) {
return ret;
}
mp_hal_i2c_sda_low(self);
mp_hal_i2c_delay(self);
return 0; // success
}
STATIC int mp_hal_i2c_stop(machine_i2c_obj_t *self) {
mp_hal_i2c_delay(self);
mp_hal_i2c_sda_low(self);
mp_hal_i2c_delay(self);
int ret = mp_hal_i2c_scl_release(self);
mp_hal_i2c_sda_release(self);
mp_hal_i2c_delay(self);
return ret;
}
STATIC void mp_hal_i2c_init(machine_i2c_obj_t *self, uint32_t freq) {
self->us_delay = 500000 / freq;
if (self->us_delay == 0) {
self->us_delay = 1;
}
mp_hal_pin_open_drain(self->scl);
mp_hal_pin_open_drain(self->sda);
mp_hal_i2c_stop(self); // ignore error
}
// return value:
// 0 - byte written and ack received
// 1 - byte written and nack received
// <0 - error, with errno being the negative of the return value
STATIC int mp_hal_i2c_write_byte(machine_i2c_obj_t *self, uint8_t val) {
mp_hal_i2c_delay(self);
mp_hal_i2c_scl_low(self);
for (int i = 7; i >= 0; i--) {
if ((val >> i) & 1) {
mp_hal_i2c_sda_release(self);
} else {
mp_hal_i2c_sda_low(self);
}
mp_hal_i2c_delay(self);
int ret = mp_hal_i2c_scl_release(self);
if (ret != 0) {
mp_hal_i2c_sda_release(self);
return ret;
}
mp_hal_i2c_scl_low(self);
}
mp_hal_i2c_sda_release(self);
mp_hal_i2c_delay(self);
int ret = mp_hal_i2c_scl_release(self);
if (ret != 0) {
return ret;
}
int ack = mp_hal_i2c_sda_read(self);
mp_hal_i2c_delay(self);
mp_hal_i2c_scl_low(self);
return ack;
}
// return value:
// 0 - success
// <0 - error, with errno being the negative of the return value
STATIC int mp_hal_i2c_read_byte(machine_i2c_obj_t *self, uint8_t *val, int nack) {
mp_hal_i2c_delay(self);
mp_hal_i2c_scl_low(self);
mp_hal_i2c_delay(self);
uint8_t data = 0;
for (int i = 7; i >= 0; i--) {
int ret = mp_hal_i2c_scl_release(self);
if (ret != 0) {
return ret;
}
data = (data << 1) | mp_hal_i2c_sda_read(self);
mp_hal_i2c_scl_low(self);
mp_hal_i2c_delay(self);
}
*val = data;
// send ack/nack bit
if (!nack) {
mp_hal_i2c_sda_low(self);
}
mp_hal_i2c_delay(self);
int ret = mp_hal_i2c_scl_release(self);
if (ret != 0) {
mp_hal_i2c_sda_release(self);
return ret;
}
mp_hal_i2c_scl_low(self);
mp_hal_i2c_sda_release(self);
return 0; // success
}
// return value:
// >=0 - number of acks received
// <0 - error, with errno being the negative of the return value
int mp_machine_soft_i2c_writeto(mp_obj_base_t *self_in, uint16_t addr, const uint8_t *src, size_t len, bool stop) {
machine_i2c_obj_t *self = (machine_i2c_obj_t*)self_in;
// start the I2C transaction
int ret = mp_hal_i2c_start(self);
if (ret != 0) {
return ret;
}
// write the slave address
ret = mp_hal_i2c_write_byte(self, addr << 1);
if (ret < 0) {
return ret;
} else if (ret != 0) {
// nack received, release the bus cleanly
mp_hal_i2c_stop(self);
return -MP_ENODEV;
}
// write the buffer to the I2C memory
int num_acks = 0;
while (len--) {
ret = mp_hal_i2c_write_byte(self, *src++);
if (ret < 0) {
return ret;
} else if (ret != 0) {
// nack received, stop sending
break;
}
++num_acks;
}
// finish the I2C transaction
if (stop) {
ret = mp_hal_i2c_stop(self);
if (ret != 0) {
return ret;
}
}
return num_acks;
}
// return value:
// 0 - success
// <0 - error, with errno being the negative of the return value
int mp_machine_soft_i2c_readfrom(mp_obj_base_t *self_in, uint16_t addr, uint8_t *dest, size_t len, bool stop) {
machine_i2c_obj_t *self = (machine_i2c_obj_t*)self_in;
// start the I2C transaction
int ret = mp_hal_i2c_start(self);
if (ret != 0) {
return ret;
}
// write the slave address
ret = mp_hal_i2c_write_byte(self, (addr << 1) | 1);
if (ret < 0) {
return ret;
} else if (ret != 0) {
// nack received, release the bus cleanly
mp_hal_i2c_stop(self);
return -MP_ENODEV;
}
// read the bytes from the slave
while (len--) {
ret = mp_hal_i2c_read_byte(self, dest++, len == 0);
if (ret != 0) {
return ret;
}
}
// finish the I2C transaction
if (stop) {
ret = mp_hal_i2c_stop(self);
if (ret != 0) {
return ret;
}
}
return 0; // success
}
/******************************************************************************/
// MicroPython bindings for I2C
STATIC void machine_i2c_obj_init_helper(machine_i2c_obj_t *self, size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
enum { ARG_scl, ARG_sda, ARG_freq, ARG_timeout };
static const mp_arg_t allowed_args[] = {
{ MP_QSTR_scl, MP_ARG_REQUIRED | MP_ARG_OBJ },
{ MP_QSTR_sda, MP_ARG_REQUIRED | MP_ARG_OBJ },
{ MP_QSTR_freq, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 400000} },
{ MP_QSTR_timeout, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 255} },
};
mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
mp_arg_parse_all(n_args, pos_args, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
self->scl = mp_hal_get_pin_obj(args[ARG_scl].u_obj);
self->sda = mp_hal_get_pin_obj(args[ARG_sda].u_obj);
self->us_timeout = args[ARG_timeout].u_int;
mp_hal_i2c_init(self, args[ARG_freq].u_int);
}
STATIC mp_obj_t machine_i2c_make_new(const mp_obj_type_t *type, size_t n_args, const mp_obj_t *args, mp_map_t *kw_args) {
// check the id argument, if given
if (n_args > 0) {
if (args[0] != MP_OBJ_NEW_SMALL_INT(-1)) {
#if defined(MICROPY_PY_MACHINE_I2C_MAKE_NEW)
// dispatch to port-specific constructor
extern mp_obj_t MICROPY_PY_MACHINE_I2C_MAKE_NEW(const mp_obj_type_t *type, size_t n_args, const mp_obj_t *all_args, mp_map_t *kw_args);
return MICROPY_PY_MACHINE_I2C_MAKE_NEW(type, n_args, args, kw_args);
#else
mp_raise_ValueError(translate("invalid I2C peripheral"));
#endif
}
--n_args;
++args;
}
// create new soft I2C object
machine_i2c_obj_t *self = m_new_obj(machine_i2c_obj_t);
self->base.type = &machine_i2c_type;
machine_i2c_obj_init_helper(self, n_args, args, kw_args);
return (mp_obj_t)self;
}
STATIC mp_obj_t machine_i2c_obj_init(size_t n_args, const mp_obj_t *args, mp_map_t *kw_args) {
machine_i2c_obj_init_helper(args[0], n_args - 1, args + 1, kw_args);
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_KW(machine_i2c_init_obj, 1, machine_i2c_obj_init);
STATIC mp_obj_t machine_i2c_scan(mp_obj_t self_in) {
mp_obj_base_t *self = MP_OBJ_TO_PTR(self_in);
mp_machine_i2c_p_t *i2c_p = (mp_machine_i2c_p_t*)mp_proto_get(self, QSTR_protocol_i2c);
mp_obj_t list = mp_obj_new_list(0, NULL);
// 7-bit addresses 0b0000xxx and 0b1111xxx are reserved
for (int addr = 0x08; addr < 0x78; ++addr) {
int ret = i2c_p->writeto(self, addr, NULL, 0, true);
if (ret == 0) {
mp_obj_list_append(list, MP_OBJ_NEW_SMALL_INT(addr));
}
}
return list;
}
MP_DEFINE_CONST_FUN_OBJ_1(machine_i2c_scan_obj, machine_i2c_scan);
STATIC mp_obj_t machine_i2c_start(mp_obj_t self_in) {
mp_obj_base_t *self = (mp_obj_base_t*)MP_OBJ_TO_PTR(self_in);
mp_machine_i2c_p_t *i2c_p = (mp_machine_i2c_p_t*)mp_proto_get(self, QSTR_protocol_i2c);
if (i2c_p->start == NULL) {
mp_raise_msg(&mp_type_OSError, translate("I2C operation not supported"));
}
int ret = i2c_p->start(self);
if (ret != 0) {
mp_raise_OSError(-ret);
}
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_1(machine_i2c_start_obj, machine_i2c_start);
STATIC mp_obj_t machine_i2c_stop(mp_obj_t self_in) {
mp_obj_base_t *self = (mp_obj_base_t*)MP_OBJ_TO_PTR(self_in);
mp_machine_i2c_p_t *i2c_p = (mp_machine_i2c_p_t*)mp_proto_get(self, QSTR_protocol_i2c);
if (i2c_p->stop == NULL) {
mp_raise_msg(&mp_type_OSError, translate("I2C operation not supported"));
}
int ret = i2c_p->stop(self);
if (ret != 0) {
mp_raise_OSError(-ret);
}
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_1(machine_i2c_stop_obj, machine_i2c_stop);
STATIC mp_obj_t machine_i2c_readinto(size_t n_args, const mp_obj_t *args) {
mp_obj_base_t *self = (mp_obj_base_t*)MP_OBJ_TO_PTR(args[0]);
mp_machine_i2c_p_t *i2c_p = (mp_machine_i2c_p_t*)mp_proto_get(self, QSTR_protocol_i2c);
if (i2c_p->read == NULL) {
mp_raise_msg(&mp_type_OSError, translate("I2C operation not supported"));
}
// get the buffer to read into
mp_buffer_info_t bufinfo;
mp_get_buffer_raise(args[1], &bufinfo, MP_BUFFER_WRITE);
// work out if we want to send a nack at the end
bool nack = (n_args == 2) ? true : mp_obj_is_true(args[2]);
// do the read
int ret = i2c_p->read(self, bufinfo.buf, bufinfo.len, nack);
if (ret != 0) {
mp_raise_OSError(-ret);
}
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(machine_i2c_readinto_obj, 2, 3, machine_i2c_readinto);
STATIC mp_obj_t machine_i2c_write(mp_obj_t self_in, mp_obj_t buf_in) {
mp_obj_base_t *self = (mp_obj_base_t*)MP_OBJ_TO_PTR(self_in);
mp_machine_i2c_p_t *i2c_p = (mp_machine_i2c_p_t*)mp_proto_get(self, QSTR_protocol_i2c);
if (i2c_p->write == NULL) {
mp_raise_msg(&mp_type_OSError, translate("I2C operation not supported"));
}
// get the buffer to write from
mp_buffer_info_t bufinfo;
mp_get_buffer_raise(buf_in, &bufinfo, MP_BUFFER_READ);
// do the write
int ret = i2c_p->write(self, bufinfo.buf, bufinfo.len);
if (ret < 0) {
mp_raise_OSError(-ret);
}
// return number of acks received
return MP_OBJ_NEW_SMALL_INT(ret);
}
MP_DEFINE_CONST_FUN_OBJ_2(machine_i2c_write_obj, machine_i2c_write);
STATIC mp_obj_t machine_i2c_readfrom(size_t n_args, const mp_obj_t *args) {
mp_obj_base_t *self = (mp_obj_base_t*)MP_OBJ_TO_PTR(args[0]);
mp_machine_i2c_p_t *i2c_p = (mp_machine_i2c_p_t*)mp_proto_get(self, QSTR_protocol_i2c);
mp_int_t addr = mp_obj_get_int(args[1]);
vstr_t vstr;
vstr_init_len(&vstr, mp_obj_get_int(args[2]));
bool stop = (n_args == 3) ? true : mp_obj_is_true(args[3]);
int ret = i2c_p->readfrom(self, addr, (uint8_t*)vstr.buf, vstr.len, stop);
if (ret < 0) {
mp_raise_OSError(-ret);
}
return mp_obj_new_str_from_vstr(&mp_type_bytes, &vstr);
}
MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(machine_i2c_readfrom_obj, 3, 4, machine_i2c_readfrom);
STATIC mp_obj_t machine_i2c_readfrom_into(size_t n_args, const mp_obj_t *args) {
mp_obj_base_t *self = (mp_obj_base_t*)MP_OBJ_TO_PTR(args[0]);
mp_machine_i2c_p_t *i2c_p = (mp_machine_i2c_p_t*)mp_proto_get(self, QSTR_protocol_i2c);
mp_int_t addr = mp_obj_get_int(args[1]);
mp_buffer_info_t bufinfo;
mp_get_buffer_raise(args[2], &bufinfo, MP_BUFFER_WRITE);
bool stop = (n_args == 3) ? true : mp_obj_is_true(args[3]);
int ret = i2c_p->readfrom(self, addr, bufinfo.buf, bufinfo.len, stop);
if (ret < 0) {
mp_raise_OSError(-ret);
}
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(machine_i2c_readfrom_into_obj, 3, 4, machine_i2c_readfrom_into);
STATIC mp_obj_t machine_i2c_writeto(size_t n_args, const mp_obj_t *args) {
mp_obj_base_t *self = (mp_obj_base_t*)MP_OBJ_TO_PTR(args[0]);
mp_machine_i2c_p_t *i2c_p = (mp_machine_i2c_p_t*)mp_proto_get(self, QSTR_protocol_i2c);
mp_int_t addr = mp_obj_get_int(args[1]);
mp_buffer_info_t bufinfo;
mp_get_buffer_raise(args[2], &bufinfo, MP_BUFFER_READ);
bool stop = (n_args == 3) ? true : mp_obj_is_true(args[3]);
int ret = i2c_p->writeto(self, addr, bufinfo.buf, bufinfo.len, stop);
if (ret < 0) {
mp_raise_OSError(-ret);
}
// return number of acks received
return MP_OBJ_NEW_SMALL_INT(ret);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(machine_i2c_writeto_obj, 3, 4, machine_i2c_writeto);
STATIC int read_mem(mp_obj_t self_in, uint16_t addr, uint32_t memaddr, uint8_t addrsize, uint8_t *buf, size_t len) {
mp_obj_base_t *self = (mp_obj_base_t*)MP_OBJ_TO_PTR(self_in);
mp_machine_i2c_p_t *i2c_p = (mp_machine_i2c_p_t*)mp_proto_get(self, QSTR_protocol_i2c);
uint8_t memaddr_buf[4];
size_t memaddr_len = 0;
for (int16_t i = addrsize - 8; i >= 0; i -= 8) {
memaddr_buf[memaddr_len++] = memaddr >> i;
}
int ret = i2c_p->writeto(self, addr, memaddr_buf, memaddr_len, false);
if (ret != memaddr_len) {
// must generate STOP
i2c_p->writeto(self, addr, NULL, 0, true);
return ret;
}
return i2c_p->readfrom(self, addr, buf, len, true);
}
#define MAX_MEMADDR_SIZE (4)
#define BUF_STACK_SIZE (12)
STATIC int write_mem(mp_obj_t self_in, uint16_t addr, uint32_t memaddr, uint8_t addrsize, const uint8_t *buf, size_t len) {
mp_obj_base_t *self = (mp_obj_base_t*)MP_OBJ_TO_PTR(self_in);
mp_machine_i2c_p_t *i2c_p = (mp_machine_i2c_p_t*)mp_proto_get(self, QSTR_protocol_i2c);
// need some memory to create the buffer to send; try to use stack if possible
uint8_t buf2_stack[MAX_MEMADDR_SIZE + BUF_STACK_SIZE];
uint8_t *buf2;
size_t buf2_alloc = 0;
if (len <= BUF_STACK_SIZE) {
buf2 = buf2_stack;
} else {
buf2_alloc = MAX_MEMADDR_SIZE + len;
buf2 = m_new(uint8_t, buf2_alloc);
}
// create the buffer to send
size_t memaddr_len = 0;
for (int16_t i = addrsize - 8; i >= 0; i -= 8) {
buf2[memaddr_len++] = memaddr >> i;
}
memcpy(buf2 + memaddr_len, buf, len);
int ret = i2c_p->writeto(self, addr, buf2, memaddr_len + len, true);
if (buf2_alloc != 0) {
m_del(uint8_t, buf2, buf2_alloc);
}
return ret;
}
STATIC const mp_arg_t machine_i2c_mem_allowed_args[] = {
{ 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_arg, MP_ARG_REQUIRED | MP_ARG_OBJ, {.u_obj = MP_OBJ_NULL} },
{ MP_QSTR_addrsize, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 8} },
};
STATIC mp_obj_t machine_i2c_readfrom_mem(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
enum { ARG_addr, ARG_memaddr, ARG_n, ARG_addrsize };
mp_arg_val_t args[MP_ARRAY_SIZE(machine_i2c_mem_allowed_args)];
mp_arg_parse_all(n_args - 1, pos_args + 1, kw_args,
MP_ARRAY_SIZE(machine_i2c_mem_allowed_args), machine_i2c_mem_allowed_args, args);
// create the buffer to store data into
vstr_t vstr;
vstr_init_len(&vstr, mp_obj_get_int(args[ARG_n].u_obj));
// do the transfer
int ret = read_mem(pos_args[0], args[ARG_addr].u_int, args[ARG_memaddr].u_int,
args[ARG_addrsize].u_int, (uint8_t*)vstr.buf, vstr.len);
if (ret < 0) {
mp_raise_OSError(-ret);
}
return mp_obj_new_str_from_vstr(&mp_type_bytes, &vstr);
}
MP_DEFINE_CONST_FUN_OBJ_KW(machine_i2c_readfrom_mem_obj, 1, machine_i2c_readfrom_mem);
STATIC mp_obj_t machine_i2c_readfrom_mem_into(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
enum { ARG_addr, ARG_memaddr, ARG_buf, ARG_addrsize };
mp_arg_val_t args[MP_ARRAY_SIZE(machine_i2c_mem_allowed_args)];
mp_arg_parse_all(n_args - 1, pos_args + 1, kw_args,
MP_ARRAY_SIZE(machine_i2c_mem_allowed_args), machine_i2c_mem_allowed_args, args);
// get the buffer to store data into
mp_buffer_info_t bufinfo;
mp_get_buffer_raise(args[ARG_buf].u_obj, &bufinfo, MP_BUFFER_WRITE);
// do the transfer
int ret = read_mem(pos_args[0], args[ARG_addr].u_int, args[ARG_memaddr].u_int,
args[ARG_addrsize].u_int, bufinfo.buf, bufinfo.len);
if (ret < 0) {
mp_raise_OSError(-ret);
}
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_KW(machine_i2c_readfrom_mem_into_obj, 1, machine_i2c_readfrom_mem_into);
STATIC mp_obj_t machine_i2c_writeto_mem(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
enum { ARG_addr, ARG_memaddr, ARG_buf, ARG_addrsize };
mp_arg_val_t args[MP_ARRAY_SIZE(machine_i2c_mem_allowed_args)];
mp_arg_parse_all(n_args - 1, pos_args + 1, kw_args,
MP_ARRAY_SIZE(machine_i2c_mem_allowed_args), machine_i2c_mem_allowed_args, args);
// get the buffer to write the data from
mp_buffer_info_t bufinfo;
mp_get_buffer_raise(args[ARG_buf].u_obj, &bufinfo, MP_BUFFER_READ);
// do the transfer
int ret = write_mem(pos_args[0], args[ARG_addr].u_int, args[ARG_memaddr].u_int,
args[ARG_addrsize].u_int, bufinfo.buf, bufinfo.len);
if (ret < 0) {
mp_raise_OSError(-ret);
}
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_KW(machine_i2c_writeto_mem_obj, 1, machine_i2c_writeto_mem);
STATIC const mp_rom_map_elem_t machine_i2c_locals_dict_table[] = {
{ MP_ROM_QSTR(MP_QSTR_init), MP_ROM_PTR(&machine_i2c_init_obj) },
{ MP_ROM_QSTR(MP_QSTR_scan), MP_ROM_PTR(&machine_i2c_scan_obj) },
// primitive I2C operations
{ MP_ROM_QSTR(MP_QSTR_start), MP_ROM_PTR(&machine_i2c_start_obj) },
{ MP_ROM_QSTR(MP_QSTR_stop), MP_ROM_PTR(&machine_i2c_stop_obj) },
{ MP_ROM_QSTR(MP_QSTR_readinto), MP_ROM_PTR(&machine_i2c_readinto_obj) },
{ MP_ROM_QSTR(MP_QSTR_write), MP_ROM_PTR(&machine_i2c_write_obj) },
// standard bus operations
{ MP_ROM_QSTR(MP_QSTR_readfrom), MP_ROM_PTR(&machine_i2c_readfrom_obj) },
{ MP_ROM_QSTR(MP_QSTR_readfrom_into), MP_ROM_PTR(&machine_i2c_readfrom_into_obj) },
{ MP_ROM_QSTR(MP_QSTR_writeto), MP_ROM_PTR(&machine_i2c_writeto_obj) },
// memory operations
{ MP_ROM_QSTR(MP_QSTR_readfrom_mem), MP_ROM_PTR(&machine_i2c_readfrom_mem_obj) },
{ MP_ROM_QSTR(MP_QSTR_readfrom_mem_into), MP_ROM_PTR(&machine_i2c_readfrom_mem_into_obj) },
{ MP_ROM_QSTR(MP_QSTR_writeto_mem), MP_ROM_PTR(&machine_i2c_writeto_mem_obj) },
};
MP_DEFINE_CONST_DICT(mp_machine_soft_i2c_locals_dict, machine_i2c_locals_dict_table);
int mp_machine_soft_i2c_read(mp_obj_base_t *self_in, uint8_t *dest, size_t len, bool nack) {
machine_i2c_obj_t *self = (machine_i2c_obj_t*)self_in;
while (len--) {
int ret = mp_hal_i2c_read_byte(self, dest++, nack && (len == 0));
if (ret != 0) {
return ret;
}
}
return 0; // success
}
int mp_machine_soft_i2c_write(mp_obj_base_t *self_in, const uint8_t *src, size_t len) {
machine_i2c_obj_t *self = (machine_i2c_obj_t*)self_in;
int num_acks = 0;
while (len--) {
int ret = mp_hal_i2c_write_byte(self, *src++);
if (ret < 0) {
return ret;
} else if (ret != 0) {
// nack received, stop sending
break;
}
++num_acks;
}
return num_acks;
}
STATIC const mp_machine_i2c_p_t mp_machine_soft_i2c_p = {
MP_PROTO_IMPLEMENT(MP_QSTR_protocol_i2c)
.start = (int(*)(mp_obj_base_t*))mp_hal_i2c_start,
.stop = (int(*)(mp_obj_base_t*))mp_hal_i2c_stop,
.read = mp_machine_soft_i2c_read,
.write = mp_machine_soft_i2c_write,
.readfrom = mp_machine_soft_i2c_readfrom,
.writeto = mp_machine_soft_i2c_writeto,
};
const mp_obj_type_t machine_i2c_type = {
{ &mp_type_type },
.name = MP_QSTR_I2C,
.make_new = machine_i2c_make_new,
.protocol = &mp_machine_soft_i2c_p,
.locals_dict = (mp_obj_dict_t*)&mp_machine_soft_i2c_locals_dict,
};
#endif // MICROPY_PY_MACHINE_I2C

58
extmod/machine_i2c.h
View File

@ -1,58 +0,0 @@
/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2016 Damien P. George
*
* 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.
*/
#ifndef MICROPY_INCLUDED_EXTMOD_MACHINE_I2C_H
#define MICROPY_INCLUDED_EXTMOD_MACHINE_I2C_H
#include "py/obj.h"
#include "py/proto.h"
// I2C protocol
// the first 4 methods can be NULL, meaning operation is not supported
typedef struct _mp_machine_i2c_p_t {
MP_PROTOCOL_HEAD
int (*start)(mp_obj_base_t *obj);
int (*stop)(mp_obj_base_t *obj);
int (*read)(mp_obj_base_t *obj, uint8_t *dest, size_t len, bool nack);
int (*write)(mp_obj_base_t *obj, const uint8_t *src, size_t len);
int (*readfrom)(mp_obj_base_t *obj, uint16_t addr, uint8_t *dest, size_t len, bool stop);
int (*writeto)(mp_obj_base_t *obj, uint16_t addr, const uint8_t *src, size_t len, bool stop);
} mp_machine_i2c_p_t;
typedef struct _mp_machine_soft_i2c_obj_t {
mp_obj_base_t base;
uint32_t us_delay;
uint32_t us_timeout;
mp_hal_pin_obj_t scl;
mp_hal_pin_obj_t sda;
} mp_machine_soft_i2c_obj_t;
extern const mp_obj_type_t machine_i2c_type;
extern const mp_obj_dict_t mp_machine_soft_i2c_locals_dict;
int mp_machine_soft_i2c_readfrom(mp_obj_base_t *self_in, uint16_t addr, uint8_t *dest, size_t len, bool stop);
int mp_machine_soft_i2c_writeto(mp_obj_base_t *self_in, uint16_t addr, const uint8_t *src, size_t len, bool stop);
#endif // MICROPY_INCLUDED_EXTMOD_MACHINE_I2C_H

286
extmod/machine_spi.c
View File

@ -1,286 +0,0 @@
/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2016 Damien P. George
*
* 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.
*/
#include <stdio.h>
#include <string.h>
#include "py/runtime.h"
#include "extmod/machine_spi.h"
#include "supervisor/shared/translate.h"
#if MICROPY_PY_MACHINE_SPI
// if a port didn't define MSB/LSB constants then provide them
#ifndef MICROPY_PY_MACHINE_SPI_MSB
#define MICROPY_PY_MACHINE_SPI_MSB (0)
#define MICROPY_PY_MACHINE_SPI_LSB (1)
#endif
/******************************************************************************/
// MicroPython bindings for generic machine.SPI
STATIC mp_obj_t mp_machine_soft_spi_make_new(const mp_obj_type_t *type, size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args);
mp_obj_t mp_machine_spi_make_new(const mp_obj_type_t *type, size_t n_args, const mp_obj_t *args, mp_map_t *kw_args) {
// check the id argument, if given
if (n_args > 0) {
if (args[0] != MP_OBJ_NEW_SMALL_INT(-1)) {
#if defined(MICROPY_PY_MACHINE_SPI_MAKE_NEW)
// dispatch to port-specific constructor
extern mp_obj_t MICROPY_PY_MACHINE_SPI_MAKE_NEW(const mp_obj_type_t *type, size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args);
return MICROPY_PY_MACHINE_SPI_MAKE_NEW(type, n_args, args, kw_args);
#else
mp_raise_ValueError(translate("invalid SPI peripheral"));
#endif
}
--n_args;
++args;
}
// software SPI
return mp_machine_soft_spi_make_new(type, n_args, args, kw_args);
}
STATIC mp_obj_t machine_spi_init(size_t n_args, const mp_obj_t *args, mp_map_t *kw_args) {
mp_obj_base_t *s = (mp_obj_base_t*)MP_OBJ_TO_PTR(args[0]);
mp_machine_spi_p_t *spi_p = (mp_machine_spi_p_t*)mp_proto_get(QSTR_protocol_spi, s);
spi_p->init(s, n_args - 1, args + 1, kw_args);
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_KW(machine_spi_init_obj, 1, machine_spi_init);
STATIC mp_obj_t machine_spi_deinit(mp_obj_t self) {
mp_obj_base_t *s = (mp_obj_base_t*)MP_OBJ_TO_PTR(self);
mp_machine_spi_p_t *spi_p = (mp_machine_spi_p_t*)mp_proto_get(QSTR_protocol_spi, s);
if (spi_p->deinit != NULL) {
spi_p->deinit(s);
}
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(machine_spi_deinit_obj, machine_spi_deinit);
STATIC void mp_machine_spi_transfer(mp_obj_t self, size_t len, const void *src, void *dest) {
mp_obj_base_t *s = (mp_obj_base_t*)MP_OBJ_TO_PTR(self);
mp_machine_spi_p_t *spi_p = (mp_machine_spi_p_t*)mp_proto_get(QSTR_protocol_spi, s);
spi_p->transfer(s, len, src, dest);
}
STATIC mp_obj_t mp_machine_spi_read(size_t n_args, const mp_obj_t *args) {
vstr_t vstr;
vstr_init_len(&vstr, mp_obj_get_int(args[1]));
memset(vstr.buf, n_args == 3 ? mp_obj_get_int(args[2]) : 0, vstr.len);
mp_machine_spi_transfer(args[0], vstr.len, vstr.buf, vstr.buf);
return mp_obj_new_str_from_vstr(&mp_type_bytes, &vstr);
}
MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mp_machine_spi_read_obj, 2, 3, mp_machine_spi_read);
STATIC mp_obj_t mp_machine_spi_readinto(size_t n_args, const mp_obj_t *args) {
mp_buffer_info_t bufinfo;
mp_get_buffer_raise(args[1], &bufinfo, MP_BUFFER_WRITE);
memset(bufinfo.buf, n_args == 3 ? mp_obj_get_int(args[2]) : 0, bufinfo.len);
mp_machine_spi_transfer(args[0], bufinfo.len, bufinfo.buf, bufinfo.buf);
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mp_machine_spi_readinto_obj, 2, 3, mp_machine_spi_readinto);
STATIC mp_obj_t mp_machine_spi_write(mp_obj_t self, mp_obj_t wr_buf) {
mp_buffer_info_t src;
mp_get_buffer_raise(wr_buf, &src, MP_BUFFER_READ);
mp_machine_spi_transfer(self, src.len, (const uint8_t*)src.buf, NULL);
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_2(mp_machine_spi_write_obj, mp_machine_spi_write);
STATIC mp_obj_t mp_machine_spi_write_readinto(mp_obj_t self, mp_obj_t wr_buf, mp_obj_t rd_buf) {
mp_buffer_info_t src;
mp_get_buffer_raise(wr_buf, &src, MP_BUFFER_READ);
mp_buffer_info_t dest;
mp_get_buffer_raise(rd_buf, &dest, MP_BUFFER_WRITE);
if (src.len != dest.len) {
mp_raise_ValueError(translate("buffers must be the same length"));
}
mp_machine_spi_transfer(self, src.len, src.buf, dest.buf);
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_3(mp_machine_spi_write_readinto_obj, mp_machine_spi_write_readinto);
STATIC const mp_rom_map_elem_t machine_spi_locals_dict_table[] = {
{ MP_ROM_QSTR(MP_QSTR_init), MP_ROM_PTR(&machine_spi_init_obj) },
{ MP_ROM_QSTR(MP_QSTR_deinit), MP_ROM_PTR(&machine_spi_deinit_obj) },
{ MP_ROM_QSTR(MP_QSTR_read), MP_ROM_PTR(&mp_machine_spi_read_obj) },
{ MP_ROM_QSTR(MP_QSTR_readinto), MP_ROM_PTR(&mp_machine_spi_readinto_obj) },
{ MP_ROM_QSTR(MP_QSTR_write), MP_ROM_PTR(&mp_machine_spi_write_obj) },
{ MP_ROM_QSTR(MP_QSTR_write_readinto), MP_ROM_PTR(&mp_machine_spi_write_readinto_obj) },
{ MP_ROM_QSTR(MP_QSTR_MSB), MP_ROM_INT(MICROPY_PY_MACHINE_SPI_MSB) },
{ MP_ROM_QSTR(MP_QSTR_LSB), MP_ROM_INT(MICROPY_PY_MACHINE_SPI_LSB) },
};
MP_DEFINE_CONST_DICT(mp_machine_spi_locals_dict, machine_spi_locals_dict_table);
/******************************************************************************/
// Implementation of soft SPI
STATIC uint32_t baudrate_from_delay_half(uint32_t delay_half) {
#ifdef MICROPY_HW_SOFTSPI_MIN_DELAY
if (delay_half == MICROPY_HW_SOFTSPI_MIN_DELAY) {
return MICROPY_HW_SOFTSPI_MAX_BAUDRATE;
} else
#endif
{
return 500000 / delay_half;
}
}
STATIC uint32_t baudrate_to_delay_half(uint32_t baudrate) {
#ifdef MICROPY_HW_SOFTSPI_MIN_DELAY
if (baudrate >= MICROPY_HW_SOFTSPI_MAX_BAUDRATE) {
return MICROPY_HW_SOFTSPI_MIN_DELAY;
} else
#endif
{
uint32_t delay_half = 500000 / baudrate;
// round delay_half up so that: actual_baudrate <= requested_baudrate
if (500000 % baudrate != 0) {
delay_half += 1;
}
return delay_half;
}
}
STATIC void mp_machine_soft_spi_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) {
mp_machine_soft_spi_obj_t *self = MP_OBJ_TO_PTR(self_in);
mp_printf(print, "SoftSPI(baudrate=%u, polarity=%u, phase=%u,"
" sck=" MP_HAL_PIN_FMT ", mosi=" MP_HAL_PIN_FMT ", miso=" MP_HAL_PIN_FMT ")",
baudrate_from_delay_half(self->spi.delay_half), self->spi.polarity, self->spi.phase,
mp_hal_pin_name(self->spi.sck), mp_hal_pin_name(self->spi.mosi), mp_hal_pin_name(self->spi.miso));
}
STATIC mp_obj_t mp_machine_soft_spi_make_new(const mp_obj_type_t *type, size_t n_args, const mp_obj_t *all_args, mp_map_t *kw_args) {
enum { ARG_baudrate, ARG_polarity, ARG_phase, ARG_bits, ARG_firstbit, ARG_sck, ARG_mosi, ARG_miso };
static const mp_arg_t allowed_args[] = {
{ MP_QSTR_baudrate, MP_ARG_INT, {.u_int = 500000} },
{ MP_QSTR_polarity, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 0} },
{ MP_QSTR_phase, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 0} },
{ MP_QSTR_bits, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 8} },
{ MP_QSTR_firstbit, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = MICROPY_PY_MACHINE_SPI_MSB} },
{ MP_QSTR_sck, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = MP_OBJ_NULL} },
{ MP_QSTR_mosi, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = MP_OBJ_NULL} },
{ MP_QSTR_miso, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = MP_OBJ_NULL} },
};
mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
mp_arg_parse_all(n_args, all_args, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
// create new object
mp_machine_soft_spi_obj_t *self = m_new_obj(mp_machine_soft_spi_obj_t);
self->base.type = &mp_machine_soft_spi_type;
// set parameters
self->spi.delay_half = baudrate_to_delay_half(args[ARG_baudrate].u_int);
self->spi.polarity = args[ARG_polarity].u_int;
self->spi.phase = args[ARG_phase].u_int;
if (args[ARG_bits].u_int != 8) {
mp_raise_ValueError(translate("bits must be 8"));
}
if (args[ARG_firstbit].u_int != MICROPY_PY_MACHINE_SPI_MSB) {
mp_raise_ValueError(translate("firstbit must be MSB"));
}
if (args[ARG_sck].u_obj == MP_OBJ_NULL
|| args[ARG_mosi].u_obj == MP_OBJ_NULL
|| args[ARG_miso].u_obj == MP_OBJ_NULL) {
mp_raise_ValueError(translate("must specify all of sck/mosi/miso"));
}
self->spi.sck = mp_hal_get_pin_obj(args[ARG_sck].u_obj);
self->spi.mosi = mp_hal_get_pin_obj(args[ARG_mosi].u_obj);
self->spi.miso = mp_hal_get_pin_obj(args[ARG_miso].u_obj);
// configure bus
mp_soft_spi_ioctl(&self->spi, MP_SPI_IOCTL_INIT);
return MP_OBJ_FROM_PTR(self);
}
STATIC void mp_machine_soft_spi_init(mp_obj_base_t *self_in, size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
mp_machine_soft_spi_obj_t *self = (mp_machine_soft_spi_obj_t*)self_in;
enum { ARG_baudrate, ARG_polarity, ARG_phase, ARG_sck, ARG_mosi, ARG_miso };
static const mp_arg_t allowed_args[] = {
{ MP_QSTR_baudrate, MP_ARG_INT, {.u_int = -1} },
{ MP_QSTR_polarity, MP_ARG_INT, {.u_int = -1} },
{ MP_QSTR_phase, MP_ARG_INT, {.u_int = -1} },
{ MP_QSTR_sck, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = MP_OBJ_NULL} },
{ MP_QSTR_mosi, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = MP_OBJ_NULL} },
{ MP_QSTR_miso, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = MP_OBJ_NULL} },
};
mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
mp_arg_parse_all(n_args, pos_args, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
if (args[ARG_baudrate].u_int != -1) {
self->spi.delay_half = baudrate_to_delay_half(args[ARG_baudrate].u_int);
}
if (args[ARG_polarity].u_int != -1) {
self->spi.polarity = args[ARG_polarity].u_int;
}
if (args[ARG_phase].u_int != -1) {
self->spi.phase = args[ARG_phase].u_int;
}
if (args[ARG_sck].u_obj != MP_OBJ_NULL) {
self->spi.sck = mp_hal_get_pin_obj(args[ARG_sck].u_obj);
}
if (args[ARG_mosi].u_obj != MP_OBJ_NULL) {
self->spi.mosi = mp_hal_get_pin_obj(args[ARG_mosi].u_obj);
}
if (args[ARG_miso].u_obj != MP_OBJ_NULL) {
self->spi.miso = mp_hal_get_pin_obj(args[ARG_miso].u_obj);
}
// configure bus
mp_soft_spi_ioctl(&self->spi, MP_SPI_IOCTL_INIT);
}
STATIC void mp_machine_soft_spi_transfer(mp_obj_base_t *self_in, size_t len, const uint8_t *src, uint8_t *dest) {
mp_machine_soft_spi_obj_t *self = (mp_machine_soft_spi_obj_t*)self_in;
mp_soft_spi_transfer(&self->spi, len, src, dest);
}
const mp_machine_spi_p_t mp_machine_soft_spi_p = {
MP_PROTO_IMPLEMENT(MP_QSTR_protocol_spi)
.init = mp_machine_soft_spi_init,
.deinit = NULL,
.transfer = mp_machine_soft_spi_transfer,
};
const mp_obj_type_t mp_machine_soft_spi_type = {
{ &mp_type_type },
.name = MP_QSTR_SoftSPI,
.print = mp_machine_soft_spi_print,
.make_new = mp_machine_spi_make_new, // delegate to master constructor
.protocol = &mp_machine_soft_spi_p,
.locals_dict = (mp_obj_dict_t*)&mp_machine_spi_locals_dict,
};
#endif // MICROPY_PY_MACHINE_SPI

58
extmod/machine_spi.h
View File

@ -1,58 +0,0 @@
/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2016 Damien P. George
*
* 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.
*/
#ifndef MICROPY_INCLUDED_EXTMOD_MACHINE_SPI_H
#define MICROPY_INCLUDED_EXTMOD_MACHINE_SPI_H
#include "py/obj.h"
#include "py/proto.h"
#include "py/mphal.h"
#include "drivers/bus/spi.h"
// SPI protocol
typedef struct _mp_machine_spi_p_t {
MP_PROTOCOL_HEAD
void (*init)(mp_obj_base_t *obj, size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args);
void (*deinit)(mp_obj_base_t *obj); // can be NULL
void (*transfer)(mp_obj_base_t *obj, size_t len, const uint8_t *src, uint8_t *dest);
} mp_machine_spi_p_t;
typedef struct _mp_machine_soft_spi_obj_t {
mp_obj_base_t base;
mp_soft_spi_obj_t spi;
} mp_machine_soft_spi_obj_t;
extern const mp_machine_spi_p_t mp_machine_soft_spi_p;
extern const mp_obj_type_t mp_machine_soft_spi_type;
extern const mp_obj_dict_t mp_machine_spi_locals_dict;
mp_obj_t mp_machine_spi_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *args);
MP_DECLARE_CONST_FUN_OBJ_VAR_BETWEEN(mp_machine_spi_read_obj);
MP_DECLARE_CONST_FUN_OBJ_VAR_BETWEEN(mp_machine_spi_readinto_obj);
MP_DECLARE_CONST_FUN_OBJ_2(mp_machine_spi_write_obj);
MP_DECLARE_CONST_FUN_OBJ_3(mp_machine_spi_write_readinto_obj);
#endif // MICROPY_INCLUDED_EXTMOD_MACHINE_SPI_H

2
ports/unix/Makefile
View File

@ -161,8 +161,6 @@ PY_EXTMOD_O_BASENAME += \
extmod/machine_pinbase.o \
extmod/machine_signal.o \
extmod/machine_pulse.o \
extmod/machine_i2c.o \
extmod/machine_spi.o
LIB_SRC_C = $(addprefix lib/,\
$(LIB_SRC_C_EXTRA) \