From e7d600494579ef319b20221769c3b2fe12962243 Mon Sep 17 00:00:00 2001 From: bnewbold Date: Tue, 30 Mar 2010 20:52:45 -0400 Subject: Major hierarchy reorganization; see README. copy-to-ide and Makefile updated to conform; .gitignore added; LICENSE added --- stm32lib/src/stm32f10x_gpio.c | 583 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 583 insertions(+) create mode 100644 stm32lib/src/stm32f10x_gpio.c (limited to 'stm32lib/src/stm32f10x_gpio.c') diff --git a/stm32lib/src/stm32f10x_gpio.c b/stm32lib/src/stm32f10x_gpio.c new file mode 100644 index 0000000..1979c05 --- /dev/null +++ b/stm32lib/src/stm32f10x_gpio.c @@ -0,0 +1,583 @@ +/******************** (C) COPYRIGHT 2008 STMicroelectronics ******************** +* File Name : stm32f10x_gpio.c +* Author : MCD Application Team +* Version : V2.0.2 +* Date : 07/11/2008 +* Description : This file provides all the GPIO firmware functions. +******************************************************************************** +* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS +* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME. +* AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT, +* INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE +* CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING +* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. +*******************************************************************************/ + +/* Includes ------------------------------------------------------------------*/ +#include "stm32f10x_gpio.h" +#include "stm32f10x_rcc.h" + +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ +/* ------------ RCC registers bit address in the alias region ----------- */ +#define AFIO_OFFSET (AFIO_BASE - PERIPH_BASE) + +/* --- EVENTCR Register ---*/ +/* Alias word address of EVOE bit */ +#define EVCR_OFFSET (AFIO_OFFSET + 0x00) +#define EVOE_BitNumber ((u8)0x07) +#define EVCR_EVOE_BB (PERIPH_BB_BASE + (EVCR_OFFSET * 32) + (EVOE_BitNumber * 4)) + +#define EVCR_PORTPINCONFIG_MASK ((u16)0xFF80) +#define LSB_MASK ((u16)0xFFFF) +#define DBGAFR_POSITION_MASK ((u32)0x000F0000) +#define DBGAFR_SWJCFG_MASK ((u32)0xF0FFFFFF) +#define DBGAFR_LOCATION_MASK ((u32)0x00200000) +#define DBGAFR_NUMBITS_MASK ((u32)0x00100000) + +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +/* Private function prototypes -----------------------------------------------*/ +/* Private functions ---------------------------------------------------------*/ + +/******************************************************************************* +* Function Name : GPIO_DeInit +* Description : Deinitializes the GPIOx peripheral registers to their default +* reset values. +* Input : - GPIOx: where x can be (A..G) to select the GPIO peripheral. +* Output : None +* Return : None +*******************************************************************************/ +void GPIO_DeInit(GPIO_TypeDef* GPIOx) +{ + /* Check the parameters */ + assert_param(IS_GPIO_ALL_PERIPH(GPIOx)); + + switch (*(u32*)&GPIOx) + { + case GPIOA_BASE: + RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOA, ENABLE); + RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOA, DISABLE); + break; + + case GPIOB_BASE: + RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOB, ENABLE); + RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOB, DISABLE); + break; + + case GPIOC_BASE: + RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOC, ENABLE); + RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOC, DISABLE); + break; + + case GPIOD_BASE: + RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOD, ENABLE); + RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOD, DISABLE); + break; + + case GPIOE_BASE: + RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOE, ENABLE); + RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOE, DISABLE); + break; + + case GPIOF_BASE: + RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOF, ENABLE); + RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOF, DISABLE); + break; + + case GPIOG_BASE: + RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOG, ENABLE); + RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOG, DISABLE); + break; + + default: + break; + } +} + +/******************************************************************************* +* Function Name : GPIO_AFIODeInit +* Description : Deinitializes the Alternate Functions (remap, event control +* and EXTI configuration) registers to their default reset +* values. +* Input : None +* Output : None +* Return : None +*******************************************************************************/ +void GPIO_AFIODeInit(void) +{ + RCC_APB2PeriphResetCmd(RCC_APB2Periph_AFIO, ENABLE); + RCC_APB2PeriphResetCmd(RCC_APB2Periph_AFIO, DISABLE); +} + +/******************************************************************************* +* Function Name : GPIO_Init +* Description : Initializes the GPIOx peripheral according to the specified +* parameters in the GPIO_InitStruct. +* Input : - GPIOx: where x can be (A..G) to select the GPIO peripheral. +* - GPIO_InitStruct: pointer to a GPIO_InitTypeDef structure that +* contains the configuration information for the specified GPIO +* peripheral. +* Output : None +* Return : None +*******************************************************************************/ +void GPIO_Init(GPIO_TypeDef* GPIOx, GPIO_InitTypeDef* GPIO_InitStruct) +{ + u32 currentmode = 0x00, currentpin = 0x00, pinpos = 0x00, pos = 0x00; + u32 tmpreg = 0x00, pinmask = 0x00; + + /* Check the parameters */ + assert_param(IS_GPIO_ALL_PERIPH(GPIOx)); + assert_param(IS_GPIO_MODE(GPIO_InitStruct->GPIO_Mode)); + assert_param(IS_GPIO_PIN(GPIO_InitStruct->GPIO_Pin)); + +/*---------------------------- GPIO Mode Configuration -----------------------*/ + currentmode = ((u32)GPIO_InitStruct->GPIO_Mode) & ((u32)0x0F); + + if ((((u32)GPIO_InitStruct->GPIO_Mode) & ((u32)0x10)) != 0x00) + { + /* Check the parameters */ + assert_param(IS_GPIO_SPEED(GPIO_InitStruct->GPIO_Speed)); + /* Output mode */ + currentmode |= (u32)GPIO_InitStruct->GPIO_Speed; + } + +/*---------------------------- GPIO CRL Configuration ------------------------*/ + /* Configure the eight low port pins */ + if (((u32)GPIO_InitStruct->GPIO_Pin & ((u32)0x00FF)) != 0x00) + { + tmpreg = GPIOx->CRL; + + for (pinpos = 0x00; pinpos < 0x08; pinpos++) + { + pos = ((u32)0x01) << pinpos; + /* Get the port pins position */ + currentpin = (GPIO_InitStruct->GPIO_Pin) & pos; + + if (currentpin == pos) + { + pos = pinpos << 2; + /* Clear the corresponding low control register bits */ + pinmask = ((u32)0x0F) << pos; + tmpreg &= ~pinmask; + + /* Write the mode configuration in the corresponding bits */ + tmpreg |= (currentmode << pos); + + /* Reset the corresponding ODR bit */ + if (GPIO_InitStruct->GPIO_Mode == GPIO_Mode_IPD) + { + GPIOx->BRR = (((u32)0x01) << pinpos); + } + else + { + /* Set the corresponding ODR bit */ + if (GPIO_InitStruct->GPIO_Mode == GPIO_Mode_IPU) + { + GPIOx->BSRR = (((u32)0x01) << pinpos); + } + } + } + } + GPIOx->CRL = tmpreg; + } + +/*---------------------------- GPIO CRH Configuration ------------------------*/ + /* Configure the eight high port pins */ + if (GPIO_InitStruct->GPIO_Pin > 0x00FF) + { + tmpreg = GPIOx->CRH; + for (pinpos = 0x00; pinpos < 0x08; pinpos++) + { + pos = (((u32)0x01) << (pinpos + 0x08)); + /* Get the port pins position */ + currentpin = ((GPIO_InitStruct->GPIO_Pin) & pos); + if (currentpin == pos) + { + pos = pinpos << 2; + /* Clear the corresponding high control register bits */ + pinmask = ((u32)0x0F) << pos; + tmpreg &= ~pinmask; + + /* Write the mode configuration in the corresponding bits */ + tmpreg |= (currentmode << pos); + + /* Reset the corresponding ODR bit */ + if (GPIO_InitStruct->GPIO_Mode == GPIO_Mode_IPD) + { + GPIOx->BRR = (((u32)0x01) << (pinpos + 0x08)); + } + /* Set the corresponding ODR bit */ + if (GPIO_InitStruct->GPIO_Mode == GPIO_Mode_IPU) + { + GPIOx->BSRR = (((u32)0x01) << (pinpos + 0x08)); + } + } + } + GPIOx->CRH = tmpreg; + } +} + +/******************************************************************************* +* Function Name : GPIO_StructInit +* Description : Fills each GPIO_InitStruct member with its default value. +* Input : - GPIO_InitStruct : pointer to a GPIO_InitTypeDef structure +* which will be initialized. +* Output : None +* Return : None +*******************************************************************************/ +void GPIO_StructInit(GPIO_InitTypeDef* GPIO_InitStruct) +{ + /* Reset GPIO init structure parameters values */ + GPIO_InitStruct->GPIO_Pin = GPIO_Pin_All; + GPIO_InitStruct->GPIO_Speed = GPIO_Speed_2MHz; + GPIO_InitStruct->GPIO_Mode = GPIO_Mode_IN_FLOATING; +} + +/******************************************************************************* +* Function Name : GPIO_ReadInputDataBit +* Description : Reads the specified input port pin. +* Input : - GPIOx: where x can be (A..G) to select the GPIO peripheral. +* : - GPIO_Pin: specifies the port bit to read. +* This parameter can be GPIO_Pin_x where x can be (0..15). +* Output : None +* Return : The input port pin value. +*******************************************************************************/ +u8 GPIO_ReadInputDataBit(GPIO_TypeDef* GPIOx, u16 GPIO_Pin) +{ + u8 bitstatus = 0x00; + + /* Check the parameters */ + assert_param(IS_GPIO_ALL_PERIPH(GPIOx)); + assert_param(IS_GET_GPIO_PIN(GPIO_Pin)); + + if ((GPIOx->IDR & GPIO_Pin) != (u32)Bit_RESET) + { + bitstatus = (u8)Bit_SET; + } + else + { + bitstatus = (u8)Bit_RESET; + } + return bitstatus; +} + +/******************************************************************************* +* Function Name : GPIO_ReadInputData +* Description : Reads the specified GPIO input data port. +* Input : - GPIOx: where x can be (A..G) to select the GPIO peripheral. +* Output : None +* Return : GPIO input data port value. +*******************************************************************************/ +u16 GPIO_ReadInputData(GPIO_TypeDef* GPIOx) +{ + /* Check the parameters */ + assert_param(IS_GPIO_ALL_PERIPH(GPIOx)); + + return ((u16)GPIOx->IDR); +} + +/******************************************************************************* +* Function Name : GPIO_ReadOutputDataBit +* Description : Reads the specified output data port bit. +* Input : - GPIOx: where x can be (A..G) to select the GPIO peripheral. +* : - GPIO_Pin: specifies the port bit to read. +* This parameter can be GPIO_Pin_x where x can be (0..15). +* Output : None +* Return : The output port pin value. +*******************************************************************************/ +u8 GPIO_ReadOutputDataBit(GPIO_TypeDef* GPIOx, u16 GPIO_Pin) +{ + u8 bitstatus = 0x00; + + /* Check the parameters */ + assert_param(IS_GPIO_ALL_PERIPH(GPIOx)); + assert_param(IS_GET_GPIO_PIN(GPIO_Pin)); + + if ((GPIOx->ODR & GPIO_Pin) != (u32)Bit_RESET) + { + bitstatus = (u8)Bit_SET; + } + else + { + bitstatus = (u8)Bit_RESET; + } + return bitstatus; +} + +/******************************************************************************* +* Function Name : GPIO_ReadOutputData +* Description : Reads the specified GPIO output data port. +* Input : - GPIOx: where x can be (A..G) to select the GPIO peripheral. +* Output : None +* Return : GPIO output data port value. +*******************************************************************************/ +u16 GPIO_ReadOutputData(GPIO_TypeDef* GPIOx) +{ + /* Check the parameters */ + assert_param(IS_GPIO_ALL_PERIPH(GPIOx)); + + return ((u16)GPIOx->ODR); +} + +/******************************************************************************* +* Function Name : GPIO_SetBits +* Description : Sets the selected data port bits. +* Input : - GPIOx: where x can be (A..G) to select the GPIO peripheral. +* - GPIO_Pin: specifies the port bits to be written. +* This parameter can be any combination of GPIO_Pin_x where +* x can be (0..15). +* Output : None +* Return : None +*******************************************************************************/ +void GPIO_SetBits(GPIO_TypeDef* GPIOx, u16 GPIO_Pin) +{ + /* Check the parameters */ + assert_param(IS_GPIO_ALL_PERIPH(GPIOx)); + assert_param(IS_GPIO_PIN(GPIO_Pin)); + + GPIOx->BSRR = GPIO_Pin; +} + +/******************************************************************************* +* Function Name : GPIO_ResetBits +* Description : Clears the selected data port bits. +* Input : - GPIOx: where x can be (A..G) to select the GPIO peripheral. +* - GPIO_Pin: specifies the port bits to be written. +* This parameter can be any combination of GPIO_Pin_x where +* x can be (0..15). +* Output : None +* Return : None +*******************************************************************************/ +void GPIO_ResetBits(GPIO_TypeDef* GPIOx, u16 GPIO_Pin) +{ + /* Check the parameters */ + assert_param(IS_GPIO_ALL_PERIPH(GPIOx)); + assert_param(IS_GPIO_PIN(GPIO_Pin)); + + GPIOx->BRR = GPIO_Pin; +} + +/******************************************************************************* +* Function Name : GPIO_WriteBit +* Description : Sets or clears the selected data port bit. +* Input : - GPIOx: where x can be (A..G) to select the GPIO peripheral. +* - GPIO_Pin: specifies the port bit to be written. +* This parameter can be one of GPIO_Pin_x where x can be (0..15). +* - BitVal: specifies the value to be written to the selected bit. +* This parameter can be one of the BitAction enum values: +* - Bit_RESET: to clear the port pin +* - Bit_SET: to set the port pin +* Output : None +* Return : None +*******************************************************************************/ +void GPIO_WriteBit(GPIO_TypeDef* GPIOx, u16 GPIO_Pin, BitAction BitVal) +{ + /* Check the parameters */ + assert_param(IS_GPIO_ALL_PERIPH(GPIOx)); + assert_param(IS_GET_GPIO_PIN(GPIO_Pin)); + assert_param(IS_GPIO_BIT_ACTION(BitVal)); + + if (BitVal != Bit_RESET) + { + GPIOx->BSRR = GPIO_Pin; + } + else + { + GPIOx->BRR = GPIO_Pin; + } +} + +/******************************************************************************* +* Function Name : GPIO_Write +* Description : Writes data to the specified GPIO data port. +* Input : - GPIOx: where x can be (A..G) to select the GPIO peripheral. +* - PortVal: specifies the value to be written to the port output +* data register. +* Output : None +* Return : None +*******************************************************************************/ +void GPIO_Write(GPIO_TypeDef* GPIOx, u16 PortVal) +{ + /* Check the parameters */ + assert_param(IS_GPIO_ALL_PERIPH(GPIOx)); + + GPIOx->ODR = PortVal; +} + +/******************************************************************************* +* Function Name : GPIO_PinLockConfig +* Description : Locks GPIO Pins configuration registers. +* Input : - GPIOx: where x can be (A..G) to select the GPIO peripheral. +* - GPIO_Pin: specifies the port bit to be written. +* This parameter can be any combination of GPIO_Pin_x where +* x can be (0..15). +* Output : None +* Return : None +*******************************************************************************/ +void GPIO_PinLockConfig(GPIO_TypeDef* GPIOx, u16 GPIO_Pin) +{ + u32 tmp = 0x00010000; + + /* Check the parameters */ + assert_param(IS_GPIO_ALL_PERIPH(GPIOx)); + assert_param(IS_GPIO_PIN(GPIO_Pin)); + + tmp |= GPIO_Pin; + /* Set LCKK bit */ + GPIOx->LCKR = tmp; + /* Reset LCKK bit */ + GPIOx->LCKR = GPIO_Pin; + /* Set LCKK bit */ + GPIOx->LCKR = tmp; + /* Read LCKK bit*/ + tmp = GPIOx->LCKR; + /* Read LCKK bit*/ + tmp = GPIOx->LCKR; +} + +/******************************************************************************* +* Function Name : GPIO_EventOutputConfig +* Description : Selects the GPIO pin used as Event output. +* Input : - GPIO_PortSource: selects the GPIO port to be used as source +* for Event output. +* This parameter can be GPIO_PortSourceGPIOx where x can be +* (A..E). +* - GPIO_PinSource: specifies the pin for the Event output. +* This parameter can be GPIO_PinSourcex where x can be (0..15). +* Output : None +* Return : None +*******************************************************************************/ +void GPIO_EventOutputConfig(u8 GPIO_PortSource, u8 GPIO_PinSource) +{ + u32 tmpreg = 0x00; + + /* Check the parameters */ + assert_param(IS_GPIO_EVENTOUT_PORT_SOURCE(GPIO_PortSource)); + assert_param(IS_GPIO_PIN_SOURCE(GPIO_PinSource)); + + tmpreg = AFIO->EVCR; + /* Clear the PORT[6:4] and PIN[3:0] bits */ + tmpreg &= EVCR_PORTPINCONFIG_MASK; + tmpreg |= (u32)GPIO_PortSource << 0x04; + tmpreg |= GPIO_PinSource; + + AFIO->EVCR = tmpreg; +} + +/******************************************************************************* +* Function Name : GPIO_EventOutputCmd +* Description : Enables or disables the Event Output. +* Input : - NewState: new state of the Event output. +* This parameter can be: ENABLE or DISABLE. +* Output : None +* Return : None +*******************************************************************************/ +void GPIO_EventOutputCmd(FunctionalState NewState) +{ + /* Check the parameters */ + assert_param(IS_FUNCTIONAL_STATE(NewState)); + + *(vu32 *) EVCR_EVOE_BB = (u32)NewState; +} + +/******************************************************************************* +* Function Name : GPIO_PinRemapConfig +* Description : Changes the mapping of the specified pin. +* Input : - GPIO_Remap: selects the pin to remap. +* This parameter can be one of the following values: +* - GPIO_Remap_SPI1 +* - GPIO_Remap_I2C1 +* - GPIO_Remap_USART1 +* - GPIO_Remap_USART2 +* - GPIO_PartialRemap_USART3 +* - GPIO_FullRemap_USART3 +* - GPIO_PartialRemap_TIM1 +* - GPIO_FullRemap_TIM1 +* - GPIO_PartialRemap1_TIM2 +* - GPIO_PartialRemap2_TIM2 +* - GPIO_FullRemap_TIM2 +* - GPIO_PartialRemap_TIM3 +* - GPIO_FullRemap_TIM3 +* - GPIO_Remap_TIM4 +* - GPIO_Remap1_CAN +* - GPIO_Remap2_CAN +* - GPIO_Remap_PD01 +* - GPIO_Remap_TIM5CH4_LSI +* - GPIO_Remap_ADC1_ETRGINJ +* - GPIO_Remap_ADC1_ETRGREG +* - GPIO_Remap_ADC2_ETRGINJ +* - GPIO_Remap_ADC2_ETRGREG +* - GPIO_Remap_SWJ_NoJTRST +* - GPIO_Remap_SWJ_JTAGDisable +* - GPIO_Remap_SWJ_Disable +* - NewState: new state of the port pin remapping. +* This parameter can be: ENABLE or DISABLE. +* Output : None +* Return : None +*******************************************************************************/ +void GPIO_PinRemapConfig(u32 GPIO_Remap, FunctionalState NewState) +{ + u32 tmp = 0x00, tmp1 = 0x00, tmpreg = 0x00, tmpmask = 0x00; + + /* Check the parameters */ + assert_param(IS_GPIO_REMAP(GPIO_Remap)); + assert_param(IS_FUNCTIONAL_STATE(NewState)); + + tmpreg = AFIO->MAPR; + + tmpmask = (GPIO_Remap & DBGAFR_POSITION_MASK) >> 0x10; + tmp = GPIO_Remap & LSB_MASK; + + if ((GPIO_Remap & (DBGAFR_LOCATION_MASK | DBGAFR_NUMBITS_MASK)) == (DBGAFR_LOCATION_MASK | DBGAFR_NUMBITS_MASK)) + { + tmpreg &= DBGAFR_SWJCFG_MASK; + AFIO->MAPR &= DBGAFR_SWJCFG_MASK; + } + else if ((GPIO_Remap & DBGAFR_NUMBITS_MASK) == DBGAFR_NUMBITS_MASK) + { + tmp1 = ((u32)0x03) << tmpmask; + tmpreg &= ~tmp1; + tmpreg |= ~DBGAFR_SWJCFG_MASK; + } + else + { + tmpreg &= ~(tmp << ((GPIO_Remap >> 0x15)*0x10)); + tmpreg |= ~DBGAFR_SWJCFG_MASK; + } + + if (NewState != DISABLE) + { + tmpreg |= (tmp << ((GPIO_Remap >> 0x15)*0x10)); + } + + AFIO->MAPR = tmpreg; +} + +/******************************************************************************* +* Function Name : GPIO_EXTILineConfig +* Description : Selects the GPIO pin used as EXTI Line. +* Input : - GPIO_PortSource: selects the GPIO port to be used as +* source for EXTI lines. +* This parameter can be GPIO_PortSourceGPIOx where x can be +* (A..G). +* - GPIO_PinSource: specifies the EXTI line to be configured. +* This parameter can be GPIO_PinSourcex where x can be (0..15). +* Output : None +* Return : None +*******************************************************************************/ +void GPIO_EXTILineConfig(u8 GPIO_PortSource, u8 GPIO_PinSource) +{ + u32 tmp = 0x00; + + /* Check the parameters */ + assert_param(IS_GPIO_EXTI_PORT_SOURCE(GPIO_PortSource)); + assert_param(IS_GPIO_PIN_SOURCE(GPIO_PinSource)); + + tmp = ((u32)0x0F) << (0x04 * (GPIO_PinSource & (u8)0x03)); + + AFIO->EXTICR[GPIO_PinSource >> 0x02] &= ~tmp; + AFIO->EXTICR[GPIO_PinSource >> 0x02] |= (((u32)GPIO_PortSource) << (0x04 * (GPIO_PinSource & (u8)0x03))); +} + +/******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/ -- cgit v1.2.3