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[STM32F4] Add few prints for I2C debug

pull/3238/head
Laurent MEUNIER 2016-10-20 17:57:48 +02:00
parent a65bacc032
commit b491165eac
1 changed files with 29 additions and 4 deletions
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33
targets/TARGET_STM/TARGET_STM32F4/i2c_api.c
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@ -37,6 +37,17 @@
#include "pinmap.h"
#include "PeripheralPins.h"
#ifndef DEBUG_STDIO
# define DEBUG_STDIO 0
#endif
#if DEBUG_STDIO
# include <stdio.h>
# define DEBUG_PRINTF(...) do { printf(__VA_ARGS__); } while(0)
#else
# define DEBUG_PRINTF(...) {}
#endif
/* Timeout values are based on core clock and I2C clock.
The BYTE_TIMEOUT is computed as twice the number of cycles it would
take to send 10 bits over I2C. Most Flags should take less than that.
@ -378,11 +389,14 @@ int i2c_read(i2c_t *obj, int address, char *data, int length, int stop) {
}
if((timeout == 0) || (obj_s->event != I2C_EVENT_TRANSFER_COMPLETE)) {
DEBUG_PRINTF(" TIMEOUT or error in i2c_read\r\n");
/* re-init IP to try and get back in a working state */
i2c_init(obj, obj_s->sda, obj_s->scl);
} else {
count = length;
}
} else {
DEBUG_PRINTF("ERROR in i2c_read\r\n");
}
return count;
@ -420,11 +434,14 @@ int i2c_write(i2c_t *obj, int address, const char *data, int length, int stop) {
}
if((timeout == 0) || (obj_s->event != I2C_EVENT_TRANSFER_COMPLETE)) {
DEBUG_PRINTF(" TIMEOUT or error in i2c_write\r\n");
/* re-init IP to try and get back in a working state */
i2c_init(obj, obj_s->sda, obj_s->scl);
} else {
count = length;
}
} else {
DEBUG_PRINTF("ERROR in i2c_read\r\n");
}
return count;
@ -623,8 +640,11 @@ int i2c_slave_read(i2c_t *obj, char *data, int length) {
wait_us(1);
}
if(timeout != 0)
count = length;
if(timeout != 0) {
count = length;
} else {
DEBUG_PRINTF("TIMEOUT or error in i2c_slave_read\r\n");
}
}
return count;
@ -646,8 +666,11 @@ int i2c_slave_write(i2c_t *obj, const char *data, int length) {
wait_us(1);
}
if(timeout != 0)
count = length;
if(timeout != 0) {
count = length;
} else {
DEBUG_PRINTF("TIMEOUT or error in i2c_slave_write\r\n");
}
}
return count;
@ -694,6 +717,8 @@ void HAL_I2C_ErrorCallback(I2C_HandleTypeDef *hi2c){
i2c_t *obj = get_i2c_obj(hi2c);
struct i2c_s *obj_s = I2C_S(obj);
DEBUG_PRINTF("HAL_I2C_ErrorCallback:%d, index=%d\r\n", (int) hi2c->ErrorCode, obj_s->index);
/* re-init IP to try and get back in a working state */
i2c_init(obj, obj_s->sda, obj_s->scl);