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Merge pull request #347 from dhylands/stmhal-usart

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stmhal - Add usart support
This commit is contained in:
Damien George 2014-03-17 10:22:51 +00:00
commit 6b144f62be
5 changed files with 68 additions and 128 deletions
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36
stmhal/main.c
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@ -8,7 +8,6 @@
#include "misc.h" #include "misc.h"
#include "systick.h" #include "systick.h"
#include "pendsv.h" #include "pendsv.h"
#include "usart.h"
#include "mpconfig.h" #include "mpconfig.h"
#include "qstr.h" #include "qstr.h"
#include "nlr.h" #include "nlr.h"
@ -24,6 +23,7 @@
#include "gccollect.h" #include "gccollect.h"
#include "pyexec.h" #include "pyexec.h"
#include "pybmodule.h" #include "pybmodule.h"
#include "usart.h"
#include "led.h" #include "led.h"
#include "exti.h" #include "exti.h"
#include "usrsw.h" #include "usrsw.h"
@ -253,31 +253,6 @@ int main(void) {
storage_init(); storage_init();
#endif #endif
// uncomment these 2 lines if you want REPL on USART_6 (or another usart) as well as on USB VCP
pyb_usart_global_debug = PYB_USART_YA;
usart_init(pyb_usart_global_debug, 115200);
#if 0
pyb_led_t led = 1;
for (int i = 0; i < 24; i++) {
//while (1) {
led_state(led, 1);
usart_tx_strn_cooked(pyb_usart_global_debug, "on\n", 3);
HAL_Delay(100);
led_state(led, 0);
usart_tx_strn_cooked(pyb_usart_global_debug, "off\n", 4);
HAL_Delay(100);
led_state(led, 1);
usart_tx_strn_cooked(pyb_usart_global_debug, "on\n", 3);
HAL_Delay(100);
led_state(led, 0);
usart_tx_strn_cooked(pyb_usart_global_debug, "off\n", 4);
HAL_Delay(700);
led = (led % 4) + 1;
}
#endif
int first_soft_reset = true; int first_soft_reset = true;
soft_reset: soft_reset:
@ -285,6 +260,15 @@ soft_reset:
// GC init // GC init
gc_init(&_heap_start, &_heap_end); gc_init(&_heap_start, &_heap_end);
// Change #if 0 to #if 1 if you want REPL on USART_6 (or another usart)
// as well as on USB VCP
#if 0
pyb_usart_global_debug = pyb_Usart(MP_OBJ_NEW_SMALL_INT(PYB_USART_YA),
MP_OBJ_NEW_SMALL_INT(115200));
#else
pyb_usart_global_debug = NULL;
#endif
// Micro Python init // Micro Python init
qstr_init(); qstr_init();
rt_init(); rt_init();

1
stmhal/printf.c
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@ -1,6 +1,7 @@
#include <stdint.h> #include <stdint.h>
#include <string.h> #include <string.h>
#include <stdarg.h> #include <stdarg.h>
#include <stm32f4xx_hal.h>
#include "std.h" #include "std.h"
#include "misc.h" #include "misc.h"

4
stmhal/pybmodule.c
View File

@ -21,6 +21,7 @@
#include "exti.h" #include "exti.h"
#include "usrsw.h" #include "usrsw.h"
#include "rtc.h" #include "rtc.h"
#include "usart.h"
#if 0 #if 0
#include "servo.h" #include "servo.h"
#include "storage.h" #include "storage.h"
@ -28,7 +29,6 @@
#include "sdcard.h" #include "sdcard.h"
#include "accel.h" #include "accel.h"
#include "i2c.h" #include "i2c.h"
#include "usart.h"
#include "adc.h" #include "adc.h"
#include "audio.h" #include "audio.h"
#endif #endif
@ -274,7 +274,9 @@ STATIC const mp_map_elem_t pyb_module_globals_table[] = {
{ MP_OBJ_NEW_QSTR(MP_QSTR_Led), (mp_obj_t)&pyb_Led_obj }, { MP_OBJ_NEW_QSTR(MP_QSTR_Led), (mp_obj_t)&pyb_Led_obj },
#if 0 #if 0
{ MP_OBJ_NEW_QSTR(MP_QSTR_I2C), (mp_obj_t)&pyb_I2C_obj }, { MP_OBJ_NEW_QSTR(MP_QSTR_I2C), (mp_obj_t)&pyb_I2C_obj },
#endif
{ MP_OBJ_NEW_QSTR(MP_QSTR_Usart), (mp_obj_t)&pyb_Usart_obj }, { MP_OBJ_NEW_QSTR(MP_QSTR_Usart), (mp_obj_t)&pyb_Usart_obj },
#if 0
{ MP_OBJ_NEW_QSTR(MP_QSTR_ADC_all), (mp_obj_t)&pyb_ADC_all_obj }, { MP_OBJ_NEW_QSTR(MP_QSTR_ADC_all), (mp_obj_t)&pyb_ADC_all_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_ADC), (mp_obj_t)&pyb_ADC_obj }, { MP_OBJ_NEW_QSTR(MP_QSTR_ADC), (mp_obj_t)&pyb_ADC_obj },

135
stmhal/usart.c
View File

@ -8,47 +8,23 @@
#include "obj.h" #include "obj.h"
#include "usart.h" #include "usart.h"
pyb_usart_t pyb_usart_global_debug = PYB_USART_NONE; struct _pyb_usart_obj_t {
mp_obj_base_t base;
pyb_usart_t usart_id;
bool is_enabled;
UART_HandleTypeDef handle;
};
#if 0 pyb_usart_obj_t *pyb_usart_global_debug = NULL;
#else
// This needs to be fixed. Right now its just a hack to get REPL working
static UART_HandleTypeDef UartHandle;
#endif
#if 0 void usart_init(pyb_usart_obj_t *usart_obj, uint32_t baudrate) {
static USART_TypeDef *usart_get_base(pyb_usart_t usart_id) {
USART_TypeDef *USARTx=NULL;
switch (usart_id) {
case PYB_USART_NONE:
break;
case PYB_USART_1:
USARTx = USART1;
break;
case PYB_USART_2:
USARTx = USART2;
break;
case PYB_USART_3:
USARTx = USART3;
break;
case PYB_USART_6:
USARTx = USART6;
break;
}
return USARTx;
}
#endif
void usart_init(pyb_usart_t usart_id, uint32_t baudrate) {
USART_TypeDef *USARTx=NULL; USART_TypeDef *USARTx=NULL;
uint32_t GPIO_Pin=0; uint32_t GPIO_Pin=0;
uint8_t GPIO_AF_USARTx=0; uint8_t GPIO_AF_USARTx=0;
GPIO_TypeDef* GPIO_Port=NULL; GPIO_TypeDef* GPIO_Port=NULL;
switch (usart_id) { switch (usart_obj->usart_id) {
case PYB_USART_NONE: case PYB_USART_NONE:
return; return;
@ -105,88 +81,63 @@ void usart_init(pyb_usart_t usart_id, uint32_t baudrate) {
GPIO_InitStructure.Alternate = GPIO_AF_USARTx; GPIO_InitStructure.Alternate = GPIO_AF_USARTx;
HAL_GPIO_Init(GPIO_Port, &GPIO_InitStructure); HAL_GPIO_Init(GPIO_Port, &GPIO_InitStructure);
memset(&UartHandle, 0, sizeof(UartHandle)); UART_HandleTypeDef *uh = &usart_obj->handle;
UartHandle.Instance = USARTx; memset(uh, 0, sizeof(*uh));
UartHandle.Init.BaudRate = baudrate; uh->Instance = USARTx;
UartHandle.Init.WordLength = USART_WORDLENGTH_8B; uh->Init.BaudRate = baudrate;
UartHandle.Init.StopBits = USART_STOPBITS_1; uh->Init.WordLength = USART_WORDLENGTH_8B;
UartHandle.Init.Parity = USART_PARITY_NONE; uh->Init.StopBits = USART_STOPBITS_1;
UartHandle.Init.Mode = USART_MODE_TX_RX; uh->Init.Parity = USART_PARITY_NONE;
UartHandle.Init.HwFlowCtl = UART_HWCONTROL_NONE; uh->Init.Mode = USART_MODE_TX_RX;
UartHandle.Init.OverSampling = UART_OVERSAMPLING_16; uh->Init.HwFlowCtl = UART_HWCONTROL_NONE;
HAL_UART_Init(&UartHandle); uh->Init.OverSampling = UART_OVERSAMPLING_16;
HAL_UART_Init(uh);
} }
bool usart_rx_any(pyb_usart_t usart_id) { bool usart_rx_any(pyb_usart_obj_t *usart_obj) {
#if 0 return __HAL_UART_GET_FLAG(&usart_obj->handle, USART_FLAG_RXNE);
USART_TypeDef *USARTx = usart_get_base(usart_id);
return USART_GetFlagStatus(USARTx, USART_FLAG_RXNE) == SET;
#else
return __HAL_UART_GET_FLAG(&UartHandle, USART_FLAG_RXNE);
#endif
} }
int usart_rx_char(pyb_usart_t usart_id) { int usart_rx_char(pyb_usart_obj_t *usart_obj) {
#if 0
USART_TypeDef *USARTx = usart_get_base(usart_id);
return USART_ReceiveData(USARTx);
#else
uint8_t ch; uint8_t ch;
if (HAL_UART_Receive(&UartHandle, &ch, 1, 0) != HAL_OK) { if (HAL_UART_Receive(&usart_obj->handle, &ch, 1, 0) != HAL_OK) {
ch = 0; ch = 0;
} }
return ch; return ch;
#endif
} }
void usart_tx_char(pyb_usart_t usart_id, int c) { void usart_tx_char(pyb_usart_obj_t *usart_obj, int c) {
#if 0
USART_TypeDef *USARTx = usart_get_base(usart_id);
// wait until the end of any previous transmission
uint32_t timeout = 100000;
while (USART_GetFlagStatus(USARTx, USART_FLAG_TC) == RESET && --timeout > 0) {
}
USART_SendData(USARTx, c);
#else
uint8_t ch = c; uint8_t ch = c;
HAL_UART_Transmit(&UartHandle, &ch, 1, 100000); HAL_UART_Transmit(&usart_obj->handle, &ch, 1, 100000);
#endif
} }
void usart_tx_str(pyb_usart_t usart_id, const char *str) { void usart_tx_str(pyb_usart_obj_t *usart_obj, const char *str) {
for (; *str; str++) { for (; *str; str++) {
usart_tx_char(usart_id, *str); usart_tx_char(usart_obj, *str);
} }
} }
void usart_tx_strn(pyb_usart_t usart_id, const char *str, uint len) { void usart_tx_strn(pyb_usart_obj_t *usart_obj, const char *str, uint len) {
for (; len > 0; str++, len--) { for (; len > 0; str++, len--) {
usart_tx_char(usart_id, *str); usart_tx_char(usart_obj, *str);
} }
} }
void usart_tx_strn_cooked(pyb_usart_t usart_id, const char *str, uint len) { void usart_tx_strn_cooked(pyb_usart_obj_t *usart_obj, const char *str, uint len) {
for (const char *top = str + len; str < top; str++) { for (const char *top = str + len; str < top; str++) {
if (*str == '\n') { if (*str == '\n') {
usart_tx_char(usart_id, '\r'); usart_tx_char(usart_obj, '\r');
} }
usart_tx_char(usart_id, *str); usart_tx_char(usart_obj, *str);
} }
} }
#if 0
/******************************************************************************/ /******************************************************************************/
/* Micro Python bindings */ /* Micro Python bindings */
typedef struct _pyb_usart_obj_t {
mp_obj_base_t base;
pyb_usart_t usart_id;
bool is_enabled;
} pyb_usart_obj_t;
static mp_obj_t usart_obj_status(mp_obj_t self_in) { static mp_obj_t usart_obj_status(mp_obj_t self_in) {
pyb_usart_obj_t *self = self_in; pyb_usart_obj_t *self = self_in;
if (usart_rx_any(self->usart_id)) { if (usart_rx_any(self)) {
return mp_const_true; return mp_const_true;
} else { } else {
return mp_const_false; return mp_const_false;
@ -198,7 +149,7 @@ static mp_obj_t usart_obj_rx_char(mp_obj_t self_in) {
pyb_usart_obj_t *self = self_in; pyb_usart_obj_t *self = self_in;
if (self->is_enabled) { if (self->is_enabled) {
ret = mp_obj_new_int(usart_rx_char(self->usart_id)); ret = mp_obj_new_int(usart_rx_char(self));
} }
return ret; return ret;
} }
@ -208,7 +159,7 @@ static mp_obj_t usart_obj_tx_char(mp_obj_t self_in, mp_obj_t c) {
uint len; uint len;
const char *str = mp_obj_str_get_data(c, &len); const char *str = mp_obj_str_get_data(c, &len);
if (len == 1 && self->is_enabled) { if (len == 1 && self->is_enabled) {
usart_tx_char(self->usart_id, str[0]); usart_tx_char(self, str[0]);
} }
return mp_const_none; return mp_const_none;
} }
@ -219,7 +170,7 @@ static mp_obj_t usart_obj_tx_str(mp_obj_t self_in, mp_obj_t s) {
if (MP_OBJ_IS_STR(s)) { if (MP_OBJ_IS_STR(s)) {
uint len; uint len;
const char *data = mp_obj_str_get_data(s, &len); const char *data = mp_obj_str_get_data(s, &len);
usart_tx_strn(self->usart_id, data, len); usart_tx_strn(self, data, len);
} }
} }
return mp_const_none; return mp_const_none;
@ -250,20 +201,20 @@ STATIC const mp_obj_type_t usart_obj_type = {
.methods = usart_methods, .methods = usart_methods,
}; };
STATIC mp_obj_t pyb_Usart(mp_obj_t usart_id, mp_obj_t baudrate) { mp_obj_t pyb_Usart(mp_obj_t usart_id, mp_obj_t baudrate) {
if (mp_obj_get_int(usart_id)>PYB_USART_MAX) { if (mp_obj_get_int(usart_id) > PYB_USART_MAX) {
return mp_const_none; return mp_const_none;
} }
/* init USART */
usart_init(mp_obj_get_int(usart_id), mp_obj_get_int(baudrate));
pyb_usart_obj_t *o = m_new_obj(pyb_usart_obj_t); pyb_usart_obj_t *o = m_new_obj(pyb_usart_obj_t);
o->base.type = &usart_obj_type; o->base.type = &usart_obj_type;
o->usart_id = mp_obj_get_int(usart_id); o->usart_id = mp_obj_get_int(usart_id);
o->is_enabled = true; o->is_enabled = true;
/* init USART */
usart_init(o, mp_obj_get_int(baudrate));
return o; return o;
} }
MP_DEFINE_CONST_FUN_OBJ_2(pyb_Usart_obj, pyb_Usart); MP_DEFINE_CONST_FUN_OBJ_2(pyb_Usart_obj, pyb_Usart);
#endif

20
stmhal/usart.h
View File

@ -12,15 +12,17 @@ typedef enum {
PYB_USART_YB = 3, // USART3 on Y9, Y10 = PB10, PB11 PYB_USART_YB = 3, // USART3 on Y9, Y10 = PB10, PB11
} pyb_usart_t; } pyb_usart_t;
extern pyb_usart_t pyb_usart_global_debug; typedef struct _pyb_usart_obj_t pyb_usart_obj_t;
void usart_init(pyb_usart_t usart_id, uint32_t baudrate); extern pyb_usart_obj_t *pyb_usart_global_debug;
bool usart_rx_any(pyb_usart_t usart_id);
int usart_rx_char(pyb_usart_t usart_id); void usart_init(pyb_usart_obj_t *usart_obj, uint32_t baudrate);
void usart_tx_str(pyb_usart_t usart_id, const char *str); bool usart_rx_any(pyb_usart_obj_t *usart_obj);
void usart_tx_strn(pyb_usart_t usart_id, const char *str, uint len); int usart_rx_char(pyb_usart_obj_t *usart_obj);
void usart_tx_strn_cooked(pyb_usart_t usart_id, const char *str, uint len); void usart_tx_str(pyb_usart_obj_t *usart_obj, const char *str);
void usart_tx_strn(pyb_usart_obj_t *usart_obj, const char *str, uint len);
void usart_tx_strn_cooked(pyb_usart_obj_t *usart_obj, const char *str, uint len);
mp_obj_t pyb_Usart(mp_obj_t usart_id, mp_obj_t baudrate);
#if 0
MP_DECLARE_CONST_FUN_OBJ(pyb_Usart_obj); MP_DECLARE_CONST_FUN_OBJ(pyb_Usart_obj);
#endif