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Diff: targets/hal/TARGET_STM/TARGET_NUCLEO_F030R8/pinmap.c
- Revision:
- 77:b5886236e6f0
- Parent:
- 76:aeb1df146756
- Child:
- 80:66393a7b209d
--- a/targets/hal/TARGET_STM/TARGET_NUCLEO_F030R8/pinmap.c Mon Jan 27 14:30:07 2014 +0000 +++ b/targets/hal/TARGET_STM/TARGET_NUCLEO_F030R8/pinmap.c Mon Jan 27 15:30:04 2014 +0000 @@ -30,6 +30,38 @@ #include "pinmap.h" #include "error.h" +// Not an API function +// Enable GPIO clock and return GPIO base address +uint32_t Set_GPIO_Clock(uint32_t port_idx) { + uint32_t gpio_add = 0; + switch (port_idx) { + case PortA: + gpio_add = GPIOA_BASE; + RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE); + break; + case PortB: + gpio_add = GPIOB_BASE; + RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE); + break; + case PortC: + gpio_add = GPIOC_BASE; + RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOC, ENABLE); + break; + case PortD: + gpio_add = GPIOD_BASE; + RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOD, ENABLE); + break; + case PortF: + gpio_add = GPIOF_BASE; + RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOF, ENABLE); + break; + default: + error("Port number is not correct."); + break; + } + return gpio_add; +} + /** * Configure pin (mode, speed, output type and pull-up/pull-down) */ @@ -47,34 +79,11 @@ uint32_t port_index = STM_PORT(pin); uint32_t pin_index = STM_PIN(pin); - - // Get GPIO structure base address and enable clock - switch (port_index) { - case PortA: - gpio = (GPIO_TypeDef *)GPIOA_BASE; - RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE); - break; - case PortB: - gpio = (GPIO_TypeDef *)GPIOB_BASE; - RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE); - break; - case PortC: - gpio = (GPIO_TypeDef *)GPIOC_BASE; - RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOC, ENABLE); - break; - case PortD: - gpio = (GPIO_TypeDef *)GPIOD_BASE; - RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOD, ENABLE); - break; - case PortF: - gpio = (GPIO_TypeDef *)GPIOF_BASE; - RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOF, ENABLE); - break; - default: - error("GPIO port number is not correct."); - break; - } - + + // Enable GPIO clock + uint32_t gpio_add = Set_GPIO_Clock(port_index); + gpio = (GPIO_TypeDef *)gpio_add; + // Configure GPIO GPIO_InitStructure.GPIO_Pin = (uint16_t)(1 << pin_index); GPIO_InitStructure.GPIO_Mode = (GPIOMode_TypeDef)mode; @@ -104,38 +113,15 @@ */ void pin_mode(PinName pin, PinMode mode) { GPIO_TypeDef *gpio; - + if (pin == NC) return; - + uint32_t port_index = STM_PORT(pin); uint32_t pin_index = STM_PIN(pin); - // Get GPIO structure base address and enable clock - switch (port_index) { - case PortA: - gpio = (GPIO_TypeDef *)GPIOA_BASE; - RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE); - break; - case PortB: - gpio = (GPIO_TypeDef *)GPIOB_BASE; - RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE); - break; - case PortC: - gpio = (GPIO_TypeDef *)GPIOC_BASE; - RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOC, ENABLE); - break; - case PortD: - gpio = (GPIO_TypeDef *)GPIOD_BASE; - RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOD, ENABLE); - break; - case PortF: - gpio = (GPIO_TypeDef *)GPIOF_BASE; - RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOF, ENABLE); - break; - default: - error("GPIO port number is not correct."); - break; - } + // Enable GPIO clock + uint32_t gpio_add = Set_GPIO_Clock(port_index); + gpio = (GPIO_TypeDef *)gpio_add; // Configure pull-up/pull-down resistors uint32_t pupd = (uint32_t)mode;