diff options
Diffstat (limited to 'firmware/targets/f7/furi-hal/furi-hal-i2c-config.c')
| -rw-r--r-- | firmware/targets/f7/furi-hal/furi-hal-i2c-config.c | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/firmware/targets/f7/furi-hal/furi-hal-i2c-config.c b/firmware/targets/f7/furi-hal/furi-hal-i2c-config.c new file mode 100644 index 00000000..273d46b1 --- /dev/null +++ b/firmware/targets/f7/furi-hal/furi-hal-i2c-config.c @@ -0,0 +1,133 @@ +#include "furi-hal-i2c-config.h" +#include <furi-hal-resources.h> +#include <furi-hal-version.h> + +/** Timing register value is computed with the STM32CubeMX Tool, + * Standard Mode @100kHz with I2CCLK = 64 MHz, + * rise time = 0ns, fall time = 0ns + */ +#define FURI_HAL_I2C_CONFIG_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 FURI_HAL_I2C_CONFIG_POWER_I2C_TIMINGS_400 0x00602173 + +osMutexId_t furi_hal_i2c_bus_power_mutex = NULL; + +static void furi_hal_i2c_bus_power_event(FuriHalI2cBus* bus, FuriHalI2cBusEvent event) { + if (event == FuriHalI2cBusEventInit) { + furi_hal_i2c_bus_power_mutex = osMutexNew(NULL); + LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_I2C1); + LL_RCC_SetI2CClockSource(LL_RCC_I2C1_CLKSOURCE_PCLK1); + LL_APB1_GRP1_ForceReset(LL_APB1_GRP1_PERIPH_I2C1); + bus->current_handle = NULL; + } else if (event == FuriHalI2cBusEventDeinit) { + osMutexDelete(furi_hal_i2c_bus_power_mutex); + } else if (event == FuriHalI2cBusEventLock) { + furi_check(osMutexAcquire(furi_hal_i2c_bus_power_mutex, osWaitForever) == osOK); + } else if (event == FuriHalI2cBusEventUnlock) { + furi_check(osMutexRelease(furi_hal_i2c_bus_power_mutex) == osOK); + } else if (event == FuriHalI2cBusEventActivate) { + LL_APB1_GRP1_ReleaseReset(LL_APB1_GRP1_PERIPH_I2C1); + } else if (event == FuriHalI2cBusEventDeactivate) { + LL_APB1_GRP1_ForceReset(LL_APB1_GRP1_PERIPH_I2C1); + } +} + +FuriHalI2cBus furi_hal_i2c_bus_power = { + .i2c=I2C1, + .callback=furi_hal_i2c_bus_power_event, +}; + +osMutexId_t furi_hal_i2c_bus_external_mutex = NULL; + +static void furi_hal_i2c_bus_external_event(FuriHalI2cBus* bus, FuriHalI2cBusEvent event) { + if (event == FuriHalI2cBusEventActivate) { + LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_I2C3); + LL_RCC_SetI2CClockSource(LL_RCC_I2C3_CLKSOURCE_PCLK1); + LL_APB1_GRP1_ReleaseReset(LL_APB1_GRP1_PERIPH_I2C3); + } else if (event == FuriHalI2cBusEventDeactivate) { + LL_APB1_GRP1_ForceReset(LL_APB1_GRP1_PERIPH_I2C3); + } +} + +FuriHalI2cBus furi_hal_i2c_bus_external = { + .i2c=I2C3, + .callback=furi_hal_i2c_bus_external_event, +}; + +void furi_hal_i2c_bus_handle_power_event(FuriHalI2cBusHandle* handle, FuriHalI2cBusHandleEvent event) { + if (event == FuriHalI2cBusHandleEventActivate) { + hal_gpio_init_ex(&gpio_i2c_power_sda, GpioModeAltFunctionOpenDrain, GpioPullNo, GpioSpeedLow, GpioAltFn4I2C1); + hal_gpio_init_ex(&gpio_i2c_power_scl, GpioModeAltFunctionOpenDrain, GpioPullNo, GpioSpeedLow, GpioAltFn4I2C1); + + LL_I2C_InitTypeDef I2C_InitStruct = {0}; + I2C_InitStruct.PeripheralMode = LL_I2C_MODE_I2C; + 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; + if (furi_hal_version_get_hw_version() > 10) { + I2C_InitStruct.Timing = FURI_HAL_I2C_CONFIG_POWER_I2C_TIMINGS_400; + } else { + I2C_InitStruct.Timing = FURI_HAL_I2C_CONFIG_POWER_I2C_TIMINGS_100; + } + LL_I2C_Init(handle->bus->i2c, &I2C_InitStruct); + + LL_I2C_EnableAutoEndMode(handle->bus->i2c); + LL_I2C_SetOwnAddress2(handle->bus->i2c, 0, LL_I2C_OWNADDRESS2_NOMASK); + LL_I2C_DisableOwnAddress2(handle->bus->i2c); + LL_I2C_DisableGeneralCall(handle->bus->i2c); + LL_I2C_EnableClockStretching(handle->bus->i2c); + LL_I2C_Enable(handle->bus->i2c); + } else if (event == FuriHalI2cBusHandleEventDeactivate) { + LL_I2C_Disable(handle->bus->i2c); + hal_gpio_write(&gpio_i2c_power_sda, 1); + hal_gpio_write(&gpio_i2c_power_scl, 1); + hal_gpio_init_ex(&gpio_i2c_power_sda, GpioModeAnalog, GpioPullNo, GpioSpeedLow, GpioAltFnUnused); + hal_gpio_init_ex(&gpio_i2c_power_scl, GpioModeAnalog, GpioPullNo, GpioSpeedLow, GpioAltFnUnused); + } +} + +FuriHalI2cBusHandle furi_hal_i2c_handle_power = { + .bus = &furi_hal_i2c_bus_power, + .callback = furi_hal_i2c_bus_handle_power_event, +}; + +void furi_hal_i2c_bus_handle_external_event(FuriHalI2cBusHandle* handle, FuriHalI2cBusHandleEvent event) { + if (event == FuriHalI2cBusHandleEventActivate) { + hal_gpio_init_ex(&gpio_ext_pc0, GpioModeAltFunctionOpenDrain, GpioPullNo, GpioSpeedLow, GpioAltFn4I2C3); + hal_gpio_init_ex(&gpio_ext_pc1, GpioModeAltFunctionOpenDrain, GpioPullNo, GpioSpeedLow, GpioAltFn4I2C3); + + LL_I2C_InitTypeDef I2C_InitStruct = {0}; + I2C_InitStruct.PeripheralMode = LL_I2C_MODE_I2C; + 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; + I2C_InitStruct.Timing = FURI_HAL_I2C_CONFIG_POWER_I2C_TIMINGS_100; + LL_I2C_Init(handle->bus->i2c, &I2C_InitStruct); + + LL_I2C_EnableAutoEndMode(handle->bus->i2c); + LL_I2C_SetOwnAddress2(handle->bus->i2c, 0, LL_I2C_OWNADDRESS2_NOMASK); + LL_I2C_DisableOwnAddress2(handle->bus->i2c); + LL_I2C_DisableGeneralCall(handle->bus->i2c); + LL_I2C_EnableClockStretching(handle->bus->i2c); + LL_I2C_Enable(handle->bus->i2c); + } else if (event == FuriHalI2cBusHandleEventDeactivate) { + LL_I2C_Disable(handle->bus->i2c); + hal_gpio_write(&gpio_ext_pc0, 1); + hal_gpio_write(&gpio_ext_pc1, 1); + hal_gpio_init_ex(&gpio_ext_pc0, GpioModeAnalog, GpioPullNo, GpioSpeedLow, GpioAltFnUnused); + hal_gpio_init_ex(&gpio_ext_pc1, GpioModeAnalog, GpioPullNo, GpioSpeedLow, GpioAltFnUnused); + } +} + +FuriHalI2cBusHandle furi_hal_i2c_handle_external = { + .bus = &furi_hal_i2c_bus_external, + .callback = furi_hal_i2c_bus_handle_external_event, +}; |