liz/flipperzero-firmware
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[FL-1581] I2C fast mode #596

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あく 2021-07-22 11:44:15 +03:00 committed by GitHub
parent 49af516ec7
commit ac8387e372
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 22 additions and 12 deletions
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1
firmware/targets/f6/api-hal/api-hal-clock.c
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@ -93,6 +93,7 @@ void api_hal_clock_init() {
// AHB1
LL_AHB1_GRP1_EnableClock(LL_AHB1_GRP1_PERIPH_DMAMUX1);
LL_AHB1_GRP1_EnableClock(LL_AHB1_GRP1_PERIPH_DMA1);
LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_I2C1);
// AHB2
LL_AHB2_GRP1_EnableClock(LL_AHB2_GRP1_PERIPH_GPIOA);

23
firmware/targets/f6/api-hal/api-hal-i2c.c
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@ -1,4 +1,6 @@
#include <api-hal-i2c.h>
#include <api-hal-version.h>
#include <stm32wbxx_ll_i2c.h>
#include <stm32wbxx_ll_gpio.h>
#include <stm32wbxx_ll_cortex.h>
@ -15,7 +17,6 @@ void api_hal_i2c_init() {
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;
@ -24,21 +25,23 @@ void api_hal_i2c_init() {
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);
if (api_hal_version_get_hw_version() > 10) {
I2C_InitStruct.Timing = POWER_I2C_TIMINGS_400;
} else {
I2C_InitStruct.Timing = POWER_I2C_TIMINGS_100;
}
LL_I2C_Init(POWER_I2C, &I2C_InitStruct);
LL_I2C_EnableAutoEndMode(POWER_I2C);
LL_I2C_SetOwnAddress2(POWER_I2C, 0, LL_I2C_OWNADDRESS2_NOMASK);
LL_I2C_DisableOwnAddress2(POWER_I2C);
LL_I2C_DisableGeneralCall(POWER_I2C);
LL_I2C_EnableClockStretching(POWER_I2C);
}
bool api_hal_i2c_tx(

10
firmware/targets/f6/api-hal/api-hal-resources.h
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@ -17,10 +17,16 @@ extern "C" {
#define POWER_I2C I2C1
/** Timing register value is computed with the STM32CubeMX Tool,
* Fast Mode @100kHz with I2CCLK = 64 MHz,
* Standard Mode @100kHz with I2CCLK = 64 MHz,
* rise time = 0ns, fall time = 0ns
*/
#define POWER_I2C_TIMINGS 0x10707DBC
#define POWER_I2C_TIMINGS_100 0x10707DBC
/** Timing register value is computed with the STM32CubeMX Tool,
* Fast Mode @400kHz with I2CCLK = 64 MHz,
* rise time = 0ns, fall time = 0ns
*/
#define POWER_I2C_TIMINGS_400 0x00602173
/* Input Related Constants */
#define INPUT_DEBOUNCE_TICKS 20