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Implemented working I2C on F412.

This commit is contained in:
Hierophect 2019-09-13 14:00:53 -04:00
parent d96aa8dac4
commit 78de4b70ed
3 changed files with 6 additions and 2 deletions
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2
ports/stm32f4/boards/stm32f412zg_discovery/stm32f4xx_hal_msp.c
View File

@ -247,7 +247,7 @@ void HAL_I2C_MspInit(I2C_HandleTypeDef* hi2c)
PB6 ------> I2C1_SCL
PB7 ------> I2C1_SDA
*/
GPIO_InitStruct.Pin = I2C1_SCL_Pin|I2C1_SDA_Pin;
GPIO_InitStruct.Pin = GPIO_PIN_8|GPIO_PIN_9;
GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
GPIO_InitStruct.Pull = GPIO_PULLUP;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;

4
ports/stm32f4/common-hal/busio/I2C.c
View File

@ -57,7 +57,9 @@ void common_hal_busio_i2c_construct(busio_i2c_obj_t *self,
break;
#endif
}
} else if (mcu_i2c_list[i]->scl_pin == scl) {
}
if (mcu_i2c_list[i]->scl_pin == scl) {
switch (mcu_i2c_list[i]->i2c_index) {
case 1: I2Cx_check = I2C1;
break;

2
ports/stm32f4/peripherals/stm32f4/stm32f412zx/periph.c
View File

@ -34,6 +34,8 @@
//const mcu_i2c_periph_obj_t periph_I2C2 = I2C(1, NO_ALT, SDA(PB,11), SCL(PB,10));
//const mcu_i2c_periph_obj_t periph_I2C3 = I2C(1, NO_ALT, SDA(PB,9), SCL(PB,8));
//WARNING: The STM32F412 has a bunch of repeated ones on AF9 so BEWARE
const mcu_i2c_periph_obj_t periph_I2C1_0 = I2C(1, 0, &pin_PB07, &pin_PB06);
const mcu_i2c_periph_obj_t periph_I2C1_1 = I2C(1, 1, &pin_PB09, &pin_PB08);
const mcu_i2c_periph_obj_t periph_I2C2 = I2C(1, NO_ALT, &pin_PB11, &pin_PB10); //not on LQFP100