/** * Configure pin (mode, speed, output type and pull-up/pull-down) */ void pin_function(PinName pin, int data) { MBED_ASSERT(pin != (PinName)NC); // Get the pin informations uint32_t mode = STM_PIN_MODE(data); uint32_t pupd = STM_PIN_PUPD(data); uint32_t afnum = STM_PIN_AFNUM(data); uint32_t port_index = STM_PORT(pin); uint32_t pin_index = STM_PIN(pin); // Enable GPIO clock uint32_t gpio_add = Set_GPIO_Clock(port_index); GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add; // Configure GPIO GPIO_InitTypeDef GPIO_InitStructure; GPIO_InitStructure.Pin = (uint32_t)(1 << pin_index); GPIO_InitStructure.Mode = gpio_mode[mode]; GPIO_InitStructure.Pull = pupd; GPIO_InitStructure.Speed = GPIO_SPEED_HIGH; GPIO_InitStructure.Alternate = afnum; HAL_GPIO_Init(gpio, &GPIO_InitStructure); // [TODO] Disconnect JTAG-DP + SW-DP signals. // Warning: Need to reconnect under reset //if ((pin == PA_13) || (pin == PA_14)) { // //} //if ((pin == PA_15) || (pin == PB_3) || (pin == PB_4)) { // //} }
/** * Configure pin (mode, speed, output type and pull-up/pull-down) */ void pin_function(PinName pin, int data) { if (pin == NC) return; // Get the pin informations uint32_t mode = STM_PIN_MODE(data); uint32_t otype = STM_PIN_OTYPE(data); uint32_t pupd = STM_PIN_PUPD(data); uint32_t afnum = STM_PIN_AFNUM(data); uint32_t port_index = STM_PORT(pin); uint32_t pin_index = STM_PIN(pin); // Enable GPIO clock uint32_t gpio_add = Set_GPIO_Clock(port_index); GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add; // Configure Alternate Function // Warning: Must be done before the GPIO is initialized if (afnum != 0xFF) { GPIO_PinAFConfig(gpio, (uint16_t)pin_index, afnum); } // Configure GPIO GPIO_InitTypeDef GPIO_InitStructure; GPIO_InitStructure.GPIO_Pin = (uint16_t)(1 << pin_index); GPIO_InitStructure.GPIO_Mode = (GPIOMode_TypeDef)mode; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_Level_3; GPIO_InitStructure.GPIO_OType = (GPIOOType_TypeDef)otype; GPIO_InitStructure.GPIO_PuPd = (GPIOPuPd_TypeDef)pupd; GPIO_Init(gpio, &GPIO_InitStructure); // *** TODO *** // Disconnect JTAG-DP + SW-DP signals. // Warning: Need to reconnect under reset //if ((pin == PA_13) || (pin == PA_14)) { // //} //if ((pin == PA_15) || (pin == PB_3) || (pin == PB_4)) { // //} }
/** * Configure pin (input, output, alternate function or analog) + output speed + AF */ void pin_function(PinName pin, int data) { MBED_ASSERT(pin != (PinName)NC); // Get the pin informations uint32_t mode = STM_PIN_MODE(data); uint32_t afnum = STM_PIN_AFNUM(data); uint32_t port_index = STM_PORT(pin); uint32_t pin_index = STM_PIN(pin); // Enable GPIO clock uint32_t gpio_add = Set_GPIO_Clock(port_index); GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add; // Enable AFIO clock RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE); // Configure Alternate Function // Warning: Must be done before the GPIO is initialized if ((afnum > 0) && (afnum < AF_NUM)) { GPIO_PinRemapConfig(AF_mapping[afnum], ENABLE); } // Configure GPIO GPIO_InitTypeDef GPIO_InitStructure; GPIO_InitStructure.GPIO_Pin = (uint16_t)(1 << pin_index); GPIO_InitStructure.GPIO_Mode = (GPIOMode_TypeDef)mode; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(gpio, &GPIO_InitStructure); // Disconnect JTAG-DP + SW-DP signals. // Warning: Need to reconnect under reset if ((pin == PA_13) || (pin == PA_14)) { GPIO_PinRemapConfig(GPIO_Remap_SWJ_Disable, ENABLE); } if ((pin == PA_15) || (pin == PB_3) || (pin == PB_4)) { GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable, ENABLE); } }
/** * @brief SPI initialization function * @param obj : pointer to spi_t structure * @param speed : spi output speed * @param mode : one of the spi modes * @param msb : set to 1 in msb first * @retval None */ void spi_init(spi_t *obj, uint32_t speed, spi_mode_e mode, uint8_t msb) { if(obj == NULL) return; SPI_HandleTypeDef *handle = &(obj->handle); GPIO_InitTypeDef GPIO_InitStruct; GPIO_TypeDef *port; uint32_t spi_freq = 0; // Determine the SPI to use SPI_TypeDef *spi_mosi = pinmap_peripheral(obj->pin_mosi, PinMap_SPI_MOSI); SPI_TypeDef *spi_miso = pinmap_peripheral(obj->pin_miso, PinMap_SPI_MISO); SPI_TypeDef *spi_sclk = pinmap_peripheral(obj->pin_sclk, PinMap_SPI_SCLK); SPI_TypeDef *spi_ssel = pinmap_peripheral(obj->pin_ssel, PinMap_SPI_SSEL); /* Pins MOSI/MISO/SCLK must not be NP. ssel can be NP. */ if(spi_mosi == NP || spi_miso == NP || spi_sclk == NP) { printf("ERROR: at least one SPI pin has no peripheral\n"); return; } SPI_TypeDef *spi_data = pinmap_merge_peripheral(spi_mosi, spi_miso); SPI_TypeDef *spi_cntl = pinmap_merge_peripheral(spi_sclk, spi_ssel); obj->spi = pinmap_merge_peripheral(spi_data, spi_cntl); // Are all pins connected to the same SPI instance? if(obj->spi == NP) { printf("ERROR: SPI pins mismatch\n"); return; } // Configure the SPI pins if (obj->pin_ssel != NC) { handle->Init.NSS = SPI_NSS_HARD_OUTPUT; } else { handle->Init.NSS = SPI_NSS_SOFT; } /* Fill default value */ handle->Instance = obj->spi; handle->Init.Mode = SPI_MODE_MASTER; spi_freq = spi_getClkFreqInst(obj->spi); if(speed >= (spi_freq/SPI_SPEED_CLOCK_DIV2_MHZ)) { handle->Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_2; } else if(speed >= (spi_freq/SPI_SPEED_CLOCK_DIV4_MHZ)) { handle->Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_4; } else if (speed >= (spi_freq/SPI_SPEED_CLOCK_DIV8_MHZ)) { handle->Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_8; } else if (speed >= (spi_freq/SPI_SPEED_CLOCK_DIV16_MHZ)) { handle->Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_16; } else if (speed >= (spi_freq/SPI_SPEED_CLOCK_DIV32_MHZ)) { handle->Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_32; } else if (speed >= (spi_freq/SPI_SPEED_CLOCK_DIV64_MHZ)) { handle->Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_64; } else if (speed >= (spi_freq/SPI_SPEED_CLOCK_DIV128_MHZ)) { handle->Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_128; } else if (speed >= (spi_freq/SPI_SPEED_CLOCK_DIV256_MHZ)) { handle->Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_256; } else { handle->Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_16; } handle->Init.Direction = SPI_DIRECTION_2LINES; if((mode == SPI_MODE_0)||(mode == SPI_MODE_2)) { handle->Init.CLKPhase = SPI_PHASE_1EDGE; } else { handle->Init.CLKPhase = SPI_PHASE_2EDGE; } if((mode == SPI_MODE_0)||(mode == SPI_MODE_1)) { handle->Init.CLKPolarity = SPI_POLARITY_LOW; } else { handle->Init.CLKPolarity = SPI_POLARITY_HIGH; } handle->Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE; handle->Init.CRCPolynomial = 7; handle->Init.DataSize = SPI_DATASIZE_8BIT; if(msb == 0) { handle->Init.FirstBit = SPI_FIRSTBIT_LSB; } else { handle->Init.FirstBit = SPI_FIRSTBIT_MSB; } handle->Init.TIMode = SPI_TIMODE_DISABLE; #if defined(STM32F0xx) || defined(STM32F3xx) || defined(STM32F7xx) || defined(STM32L4xx) handle->Init.NSSPMode = SPI_NSS_PULSE_DISABLE; #endif if(obj->pin_mosi != NC) { port = set_GPIO_Port_Clock(STM_PORT(obj->pin_mosi)); GPIO_InitStruct.Pin = STM_GPIO_PIN(obj->pin_mosi); GPIO_InitStruct.Mode = STM_PIN_MODE(pinmap_function(obj->pin_mosi,PinMap_SPI_MOSI)); GPIO_InitStruct.Pull = STM_PIN_PUPD(pinmap_function(obj->pin_mosi,PinMap_SPI_MOSI)); GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH; #ifdef STM32F1xx pin_SetF1AFPin(STM_PIN_AFNUM(pinmap_function(obj->pin_mosi,PinMap_SPI_MOSI))); #else GPIO_InitStruct.Alternate = STM_PIN_AFNUM(pinmap_function(obj->pin_mosi,PinMap_SPI_MOSI)); #endif /* STM32F1xx */ HAL_GPIO_Init(port, &GPIO_InitStruct); } if(obj->pin_miso != NC) { port = set_GPIO_Port_Clock(STM_PORT(obj->pin_miso)); GPIO_InitStruct.Pin = STM_GPIO_PIN(obj->pin_miso); GPIO_InitStruct.Mode = STM_PIN_MODE(pinmap_function(obj->pin_miso,PinMap_SPI_MISO)); GPIO_InitStruct.Pull = STM_PIN_PUPD(pinmap_function(obj->pin_miso,PinMap_SPI_MISO)); GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH; #ifdef STM32F1xx pin_SetF1AFPin(STM_PIN_AFNUM(pinmap_function(obj->pin_miso,PinMap_SPI_MISO))); #else GPIO_InitStruct.Alternate = STM_PIN_AFNUM(pinmap_function(obj->pin_miso,PinMap_SPI_MISO)); #endif /* STM32F1xx */ HAL_GPIO_Init(port, &GPIO_InitStruct); } if(obj->pin_sclk != NC) { port = set_GPIO_Port_Clock(STM_PORT(obj->pin_sclk)); GPIO_InitStruct.Pin = STM_GPIO_PIN(obj->pin_sclk); GPIO_InitStruct.Mode = STM_PIN_MODE(pinmap_function(obj->pin_sclk,PinMap_SPI_SCLK)); /* * According the STM32 Datasheet for SPI peripheral we need to PULLDOWN * or PULLUP the SCK pin according the polarity used. */ if(handle->Init.CLKPolarity == SPI_POLARITY_LOW) { GPIO_InitStruct.Pull = GPIO_PULLDOWN; } else { GPIO_InitStruct.Pull = GPIO_PULLUP; } GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH; #ifdef STM32F1xx pin_SetF1AFPin(STM_PIN_AFNUM(pinmap_function(obj->pin_sclk,PinMap_SPI_SCLK))); #else GPIO_InitStruct.Alternate = STM_PIN_AFNUM(pinmap_function(obj->pin_sclk,PinMap_SPI_SCLK)); #endif /* STM32F1xx */ HAL_GPIO_Init(port, &GPIO_InitStruct); } if(obj->pin_ssel != NC) { port = set_GPIO_Port_Clock(STM_PORT(obj->pin_ssel)); GPIO_InitStruct.Pin = STM_GPIO_PIN(obj->pin_ssel); GPIO_InitStruct.Mode = STM_PIN_MODE(pinmap_function(obj->pin_ssel,PinMap_SPI_SSEL)); GPIO_InitStruct.Pull = STM_PIN_PUPD(pinmap_function(obj->pin_ssel,PinMap_SPI_SSEL)); GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH; #ifdef STM32F1xx pin_SetF1AFPin(STM_PIN_AFNUM(pinmap_function(obj->pin_ssel,PinMap_SPI_SSEL))); #else GPIO_InitStruct.Alternate = STM_PIN_AFNUM(pinmap_function(obj->pin_ssel,PinMap_SPI_SSEL)); #endif /* STM32F1xx */ HAL_GPIO_Init(port, &GPIO_InitStruct); } #if defined SPI1_BASE // Enable SPI clock if (handle->Instance == SPI1) { __HAL_RCC_SPI1_CLK_ENABLE(); } #endif #if defined SPI2_BASE if (handle->Instance == SPI2) { __HAL_RCC_SPI2_CLK_ENABLE(); } #endif #if defined SPI3_BASE if (handle->Instance == SPI3) { __HAL_RCC_SPI3_CLK_ENABLE(); } #endif #if defined SPI4_BASE if (handle->Instance == SPI4) { __HAL_RCC_SPI4_CLK_ENABLE(); } #endif #if defined SPI5_BASE if (handle->Instance == SPI5) { __HAL_RCC_SPI5_CLK_ENABLE(); } #endif #if defined SPI6_BASE if (handle->Instance == SPI6) { __HAL_RCC_SPI6_CLK_ENABLE(); } #endif HAL_SPI_Init(handle); /* In order to set correctly the SPI polarity we need to enable the peripheral */ __HAL_SPI_ENABLE(handle); }
/** * Configure pin (input, output, alternate function or analog) + output speed + AF */ void pin_function(PinName pin, int data) { MBED_ASSERT(pin != (PinName)NC); // Get the pin informations uint32_t mode = STM_PIN_MODE(data); uint32_t pupd = STM_PIN_PUPD(data); uint32_t afnum = STM_PIN_AFNUM(data); uint32_t port_index = STM_PORT(pin); uint32_t pin_index = STM_PIN(pin); // Enable GPIO clock uint32_t gpio_add = Set_GPIO_Clock(port_index); GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add; // Enable AFIO clock __HAL_RCC_AFIO_CLK_ENABLE(); // Configure Alternate Function // Warning: Must be done before the GPIO is initialized if (afnum > 0) { switch (afnum) { case 1: // Remap SPI1 __HAL_AFIO_REMAP_SPI1_ENABLE(); break; case 2: // Remap I2C1 __HAL_AFIO_REMAP_I2C1_ENABLE(); break; case 3: // Remap USART1 __HAL_AFIO_REMAP_USART1_ENABLE(); break; case 4: // Remap USART2 __HAL_AFIO_REMAP_USART2_ENABLE(); break; case 5: // Partial Remap USART3 __HAL_AFIO_REMAP_USART3_PARTIAL(); break; case 6: // Partial Remap TIM1 __HAL_AFIO_REMAP_TIM1_PARTIAL(); break; case 7: // Partial Remap TIM3 __HAL_AFIO_REMAP_TIM3_PARTIAL(); break; case 8: // Full Remap TIM2 __HAL_AFIO_REMAP_TIM2_ENABLE(); break; case 9: // Full Remap TIM3 __HAL_AFIO_REMAP_TIM3_ENABLE(); break; default: break; } } // Configure GPIO GPIO_InitTypeDef GPIO_InitStructure; GPIO_InitStructure.Pin = (uint32_t)(1 << pin_index); GPIO_InitStructure.Mode = gpio_mode[mode]; GPIO_InitStructure.Pull = pupd; GPIO_InitStructure.Speed = GPIO_SPEED_HIGH; HAL_GPIO_Init(gpio, &GPIO_InitStructure); // Disconnect JTAG-DP + SW-DP signals. // Warning: Need to reconnect under reset if ((pin == PA_13) || (pin == PA_14)) { __HAL_AFIO_REMAP_SWJ_DISABLE(); // JTAG-DP Disabled and SW-DP Disabled } if ((pin == PA_15) || (pin == PB_3) || (pin == PB_4)) { __HAL_AFIO_REMAP_SWJ_NOJTAG(); // JTAG-DP Disabled and SW-DP enabled } }