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[FL-933] API HAL I2C: initialize bus on start (#360)

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* API HAL I2C: initialize bus on start
* API HAL I2C: move timing register to resources, explain its value. Update cube project.
This commit is contained in:
あく
2021-03-03 12:21:14 +03:00
committed by GitHub
parent 3c088dcf7f
commit f4f8ef59fd
15 changed files with 208 additions and 106 deletions
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31
firmware/targets/f4/api-hal/api-hal-i2c.c
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@@ -1,5 +1,6 @@
#include <api-hal-i2c.h>
#include <stm32wbxx_ll_i2c.h>
#include <stm32wbxx_ll_gpio.h>
#include <furi.h>
osMutexId_t api_hal_i2c_mutex = NULL;
@@ -7,6 +8,36 @@ osMutexId_t api_hal_i2c_mutex = NULL;
void api_hal_i2c_init() {
api_hal_i2c_mutex = osMutexNew(NULL);
furi_check(api_hal_i2c_mutex);
LL_I2C_InitTypeDef I2C_InitStruct = {0};
LL_GPIO_InitTypeDef GPIO_InitStruct = {0};
LL_RCC_SetI2CClockSource(LL_RCC_I2C1_CLKSOURCE_PCLK1);
LL_AHB2_GRP1_EnableClock(LL_AHB2_GRP1_PERIPH_GPIOA);
GPIO_InitStruct.Pin = POWER_I2C_SCL_Pin | POWER_I2C_SDA_Pin;
GPIO_InitStruct.Mode = LL_GPIO_MODE_ALTERNATE;
GPIO_InitStruct.Speed = LL_GPIO_SPEED_FREQ_LOW;
GPIO_InitStruct.OutputType = LL_GPIO_OUTPUT_OPENDRAIN;
GPIO_InitStruct.Pull = LL_GPIO_PULL_NO;
GPIO_InitStruct.Alternate = LL_GPIO_AF_4;
LL_GPIO_Init(GPIOA, &GPIO_InitStruct);
LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_I2C1);
I2C_InitStruct.PeripheralMode = LL_I2C_MODE_I2C;
I2C_InitStruct.Timing = POWER_I2C_TIMINGS;
I2C_InitStruct.AnalogFilter = LL_I2C_ANALOGFILTER_ENABLE;
I2C_InitStruct.DigitalFilter = 0;
I2C_InitStruct.OwnAddress1 = 0;
I2C_InitStruct.TypeAcknowledge = LL_I2C_ACK;
I2C_InitStruct.OwnAddrSize = LL_I2C_OWNADDRESS1_7BIT;
LL_I2C_Init(I2C1, &I2C_InitStruct);
LL_I2C_EnableAutoEndMode(I2C1);
LL_I2C_SetOwnAddress2(I2C1, 0, LL_I2C_OWNADDRESS2_NOMASK);
LL_I2C_DisableOwnAddress2(I2C1);
LL_I2C_DisableGeneralCall(I2C1);
LL_I2C_EnableClockStretching(I2C1);
}
void api_hal_i2c_tx(I2C_TypeDef* instance, uint8_t address, const uint8_t *data, uint8_t size) {

13
firmware/targets/f4/api-hal/api-hal-resources.h
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@@ -10,12 +10,17 @@
extern "C" {
#endif
#define I2C_SCL_Pin LL_GPIO_PIN_9
#define I2C_SCL_GPIO_Port GPIOA
#define I2C_SDA_Pin LL_GPIO_PIN_10
#define I2C_SDA_GPIO_Port GPIOA
#define POWER_I2C_SCL_Pin LL_GPIO_PIN_9
#define POWER_I2C_SCL_GPIO_Port GPIOA
#define POWER_I2C_SDA_Pin LL_GPIO_PIN_10
#define POWER_I2C_SDA_GPIO_Port GPIOA
#define POWER_I2C I2C1
/* Timing register value is computed with the STM32CubeMX Tool,
* Fast Mode @100kHz with I2CCLK = 64 MHz,
* rise time = 0ns, fall time = 0ns
*/
#define POWER_I2C_TIMINGS 0x10707DBC
/* Input Related Constants */
#define INPUT_DEBOUNCE_TICKS 20