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Diff: libs/LPC17xx/LPC17xxLib/src/lpc17xx_gpio.c
- Revision:
- 3:f151d08d335c
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- 2:1df0b61d3b5a
--- a/libs/LPC17xx/LPC17xxLib/src/lpc17xx_gpio.c Fri Feb 28 18:52:52 2014 -0800 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,759 +0,0 @@ -#ifdef __LPC17XX__ - -/********************************************************************** -* $Id$ lpc17xx_gpio.c 2010-05-21 -*//** -* @file lpc17xx_gpio.c -* @brief Contains all functions support for GPIO firmware -* library on LPC17xx -* @version 2.0 -* @date 21. May. 2010 -* @author NXP MCU SW Application Team -* -* Copyright(C) 2010, NXP Semiconductor -* All rights reserved. -* -*********************************************************************** -* Software that is described herein is for illustrative purposes only -* which provides customers with programming information regarding the -* products. This software is supplied "AS IS" without any warranties. -* NXP Semiconductors assumes no responsibility or liability for the -* use of the software, conveys no license or title under any patent, -* copyright, or mask work right to the product. NXP Semiconductors -* reserves the right to make changes in the software without -* notification. NXP Semiconductors also make no representation or -* warranty that such application will be suitable for the specified -* use without further testing or modification. -**********************************************************************/ - -/* Peripheral group ----------------------------------------------------------- */ -/** @addtogroup GPIO - * @{ - */ - -/* Includes ------------------------------------------------------------------- */ -#include "lpc17xx_gpio.h" - -/* If this source file built with example, the LPC17xx FW library configuration - * file in each example directory ("lpc17xx_libcfg.h") must be included, - * otherwise the default FW library configuration file must be included instead - */ -#ifdef __BUILD_WITH_EXAMPLE__ -#include "lpc17xx_libcfg.h" -#else -#include "lpc17xx_libcfg_default.h" -#endif /* __BUILD_WITH_EXAMPLE__ */ - - -#ifdef _GPIO - -/* Private Functions ---------------------------------------------------------- */ - -static LPC_GPIO_TypeDef *GPIO_GetPointer(uint8_t portNum); -static GPIO_HalfWord_TypeDef *FIO_HalfWordGetPointer(uint8_t portNum); -static GPIO_Byte_TypeDef *FIO_ByteGetPointer(uint8_t portNum); - -/*********************************************************************//** - * @brief Get pointer to GPIO peripheral due to GPIO port - * @param[in] portNum Port Number value, should be in range from 0 to 4. - * @return Pointer to GPIO peripheral - **********************************************************************/ -static LPC_GPIO_TypeDef *GPIO_GetPointer(uint8_t portNum) -{ - LPC_GPIO_TypeDef *pGPIO = NULL; - - switch (portNum) { - case 0: - pGPIO = LPC_GPIO0; - break; - case 1: - pGPIO = LPC_GPIO1; - break; - case 2: - pGPIO = LPC_GPIO2; - break; - case 3: - pGPIO = LPC_GPIO3; - break; - case 4: - pGPIO = LPC_GPIO4; - break; - default: - break; - } - - return pGPIO; -} - -/*********************************************************************//** - * @brief Get pointer to FIO peripheral in halfword accessible style - * due to FIO port - * @param[in] portNum Port Number value, should be in range from 0 to 4. - * @return Pointer to FIO peripheral - **********************************************************************/ -static GPIO_HalfWord_TypeDef *FIO_HalfWordGetPointer(uint8_t portNum) -{ - GPIO_HalfWord_TypeDef *pFIO = NULL; - - switch (portNum) { - case 0: - pFIO = GPIO0_HalfWord; - break; - case 1: - pFIO = GPIO1_HalfWord; - break; - case 2: - pFIO = GPIO2_HalfWord; - break; - case 3: - pFIO = GPIO3_HalfWord; - break; - case 4: - pFIO = GPIO4_HalfWord; - break; - default: - break; - } - - return pFIO; -} - -/*********************************************************************//** - * @brief Get pointer to FIO peripheral in byte accessible style - * due to FIO port - * @param[in] portNum Port Number value, should be in range from 0 to 4. - * @return Pointer to FIO peripheral - **********************************************************************/ -static GPIO_Byte_TypeDef *FIO_ByteGetPointer(uint8_t portNum) -{ - GPIO_Byte_TypeDef *pFIO = NULL; - - switch (portNum) { - case 0: - pFIO = GPIO0_Byte; - break; - case 1: - pFIO = GPIO1_Byte; - break; - case 2: - pFIO = GPIO2_Byte; - break; - case 3: - pFIO = GPIO3_Byte; - break; - case 4: - pFIO = GPIO4_Byte; - break; - default: - break; - } - - return pFIO; -} - -/* End of Private Functions --------------------------------------------------- */ - - -/* Public Functions ----------------------------------------------------------- */ -/** @addtogroup GPIO_Public_Functions - * @{ - */ - - -/* GPIO ------------------------------------------------------------------------------ */ - -/*********************************************************************//** - * @brief Set Direction for GPIO port. - * @param[in] portNum Port Number value, should be in range from 0 to 4 - * @param[in] bitValue Value that contains all bits to set direction, - * in range from 0 to 0xFFFFFFFF. - * example: value 0x5 to set direction for bit 0 and bit 1. - * @param[in] dir Direction value, should be: - * - 0: Input. - * - 1: Output. - * @return None - * - * Note: All remaining bits that are not activated in bitValue (value '0') - * will not be effected by this function. - **********************************************************************/ -void GPIO_SetDir(uint8_t portNum, uint32_t bitValue, uint8_t dir) -{ - LPC_GPIO_TypeDef *pGPIO = GPIO_GetPointer(portNum); - - if (pGPIO != NULL) { - // Enable Output - if (dir) { - pGPIO->FIODIR |= bitValue; - } - // Enable Input - else { - pGPIO->FIODIR &= ~bitValue; - } - } -} - - -/*********************************************************************//** - * @brief Set Value for bits that have output direction on GPIO port. - * @param[in] portNum Port number value, should be in range from 0 to 4 - * @param[in] bitValue Value that contains all bits on GPIO to set, - * in range from 0 to 0xFFFFFFFF. - * example: value 0x5 to set bit 0 and bit 1. - * @return None - * - * Note: - * - For all bits that has been set as input direction, this function will - * not effect. - * - For all remaining bits that are not activated in bitValue (value '0') - * will not be effected by this function. - **********************************************************************/ -void GPIO_SetValue(uint8_t portNum, uint32_t bitValue) -{ - LPC_GPIO_TypeDef *pGPIO = GPIO_GetPointer(portNum); - - if (pGPIO != NULL) { - pGPIO->FIOSET = bitValue; - } -} - -/*********************************************************************//** - * @brief Clear Value for bits that have output direction on GPIO port. - * @param[in] portNum Port number value, should be in range from 0 to 4 - * @param[in] bitValue Value that contains all bits on GPIO to clear, - * in range from 0 to 0xFFFFFFFF. - * example: value 0x5 to clear bit 0 and bit 1. - * @return None - * - * Note: - * - For all bits that has been set as input direction, this function will - * not effect. - * - For all remaining bits that are not activated in bitValue (value '0') - * will not be effected by this function. - **********************************************************************/ -void GPIO_ClearValue(uint8_t portNum, uint32_t bitValue) -{ - LPC_GPIO_TypeDef *pGPIO = GPIO_GetPointer(portNum); - - if (pGPIO != NULL) { - pGPIO->FIOCLR = bitValue; - } -} - -/*********************************************************************//** - * @brief Read Current state on port pin that have input direction of GPIO - * @param[in] portNum Port number to read value, in range from 0 to 4 - * @return Current value of GPIO port. - * - * Note: Return value contain state of each port pin (bit) on that GPIO regardless - * its direction is input or output. - **********************************************************************/ -uint32_t GPIO_ReadValue(uint8_t portNum) -{ - LPC_GPIO_TypeDef *pGPIO = GPIO_GetPointer(portNum); - - if (pGPIO != NULL) { - return pGPIO->FIOPIN; - } - - return (0); -} - -/*********************************************************************//** - * @brief Enable GPIO interrupt (just used for P0.0-P0.30, P2.0-P2.13) - * @param[in] portNum Port number to read value, should be: 0 or 2 - * @param[in] bitValue Value that contains all bits on GPIO to enable, - * in range from 0 to 0xFFFFFFFF. - * @param[in] edgeState state of edge, should be: - * - 0: Rising edge - * - 1: Falling edge - * @return None - **********************************************************************/ -void GPIO_IntCmd(uint8_t portNum, uint32_t bitValue, uint8_t edgeState) -{ - if((portNum == 0)&&(edgeState == 0)) - LPC_GPIOINT->IO0IntEnR = bitValue; - else if ((portNum == 2)&&(edgeState == 0)) - LPC_GPIOINT->IO2IntEnR = bitValue; - else if ((portNum == 0)&&(edgeState == 1)) - LPC_GPIOINT->IO0IntEnF = bitValue; - else if ((portNum == 2)&&(edgeState == 1)) - LPC_GPIOINT->IO2IntEnF = bitValue; - else - //Error - while(1); -} - -/*********************************************************************//** - * @brief Get GPIO Interrupt Status (just used for P0.0-P0.30, P2.0-P2.13) - * @param[in] portNum Port number to read value, should be: 0 or 2 - * @param[in] pinNum Pin number, should be: 0..30(with port 0) and 0..13 - * (with port 2) - * @param[in] edgeState state of edge, should be: - * - 0: Rising edge - * - 1: Falling edge - * @return Bool could be: - * - ENABLE: Interrupt has been generated due to a rising - * edge on P0.0 - * - DISABLE: A rising edge has not been detected on P0.0 - **********************************************************************/ -FunctionalState GPIO_GetIntStatus(uint8_t portNum, uint32_t pinNum, uint8_t edgeState) -{ - if((portNum == 0) && (edgeState == 0))//Rising Edge - return ((FunctionalState)(((LPC_GPIOINT->IO0IntStatR)>>pinNum)& 0x1)); - else if ((portNum == 2) && (edgeState == 0)) - return ((FunctionalState)(((LPC_GPIOINT->IO2IntStatR)>>pinNum)& 0x1)); - else if ((portNum == 0) && (edgeState == 1))//Falling Edge - return ((FunctionalState)(((LPC_GPIOINT->IO0IntStatF)>>pinNum)& 0x1)); - else if ((portNum == 2) && (edgeState == 1)) - return ((FunctionalState)(((LPC_GPIOINT->IO2IntStatF)>>pinNum)& 0x1)); - else - //Error - while(1); -} -/*********************************************************************//** - * @brief Clear GPIO interrupt (just used for P0.0-P0.30, P2.0-P2.13) - * @param[in] portNum Port number to read value, should be: 0 or 2 - * @param[in] bitValue Value that contains all bits on GPIO to enable, - * in range from 0 to 0xFFFFFFFF. - * @return None - **********************************************************************/ -void GPIO_ClearInt(uint8_t portNum, uint32_t bitValue) -{ - if(portNum == 0) - LPC_GPIOINT->IO0IntClr = bitValue; - else if (portNum == 2) - LPC_GPIOINT->IO2IntClr = bitValue; - else - //Invalid portNum - while(1); -} - -/* FIO word accessible ----------------------------------------------------------------- */ -/* Stub function for FIO (word-accessible) style */ - -/** - * @brief The same with GPIO_SetDir() - */ -void FIO_SetDir(uint8_t portNum, uint32_t bitValue, uint8_t dir) -{ - GPIO_SetDir(portNum, bitValue, dir); -} - -/** - * @brief The same with GPIO_SetValue() - */ -void FIO_SetValue(uint8_t portNum, uint32_t bitValue) -{ - GPIO_SetValue(portNum, bitValue); -} - -/** - * @brief The same with GPIO_ClearValue() - */ -void FIO_ClearValue(uint8_t portNum, uint32_t bitValue) -{ - GPIO_ClearValue(portNum, bitValue); -} - -/** - * @brief The same with GPIO_ReadValue() - */ -uint32_t FIO_ReadValue(uint8_t portNum) -{ - return (GPIO_ReadValue(portNum)); -} - -/** - * @brief The same with GPIO_IntCmd() - */ -void FIO_IntCmd(uint8_t portNum, uint32_t bitValue, uint8_t edgeState) -{ - GPIO_IntCmd(portNum, bitValue, edgeState); -} - -/** - * @brief The same with GPIO_GetIntStatus() - */ -FunctionalState FIO_GetIntStatus(uint8_t portNum, uint32_t pinNum, uint8_t edgeState) -{ - return (GPIO_GetIntStatus(portNum, pinNum, edgeState)); -} - -/** - * @brief The same with GPIO_ClearInt() - */ -void FIO_ClearInt(uint8_t portNum, uint32_t bitValue) -{ - GPIO_ClearInt(portNum, bitValue); -} -/*********************************************************************//** - * @brief Set mask value for bits in FIO port - * @param[in] portNum Port number, in range from 0 to 4 - * @param[in] bitValue Value that contains all bits in to set, - * in range from 0 to 0xFFFFFFFF. - * @param[in] maskValue Mask value contains state value for each bit: - * - 0: not mask. - * - 1: mask. - * @return None - * - * Note: - * - All remaining bits that are not activated in bitValue (value '0') - * will not be effected by this function. - * - After executing this function, in mask register, value '0' on each bit - * enables an access to the corresponding physical pin via a read or write access, - * while value '1' on bit (masked) that corresponding pin will not be changed - * with write access and if read, will not be reflected in the updated pin. - **********************************************************************/ -void FIO_SetMask(uint8_t portNum, uint32_t bitValue, uint8_t maskValue) -{ - LPC_GPIO_TypeDef *pFIO = GPIO_GetPointer(portNum); - if(pFIO != NULL) { - // Mask - if (maskValue){ - pFIO->FIOMASK |= bitValue; - } - // Un-mask - else { - pFIO->FIOMASK &= ~bitValue; - } - } -} - - -/* FIO halfword accessible ------------------------------------------------------------- */ - -/*********************************************************************//** - * @brief Set direction for FIO port in halfword accessible style - * @param[in] portNum Port number, in range from 0 to 4 - * @param[in] halfwordNum HalfWord part number, should be 0 (lower) or 1(upper) - * @param[in] bitValue Value that contains all bits in to set direction, - * in range from 0 to 0xFFFF. - * @param[in] dir Direction value, should be: - * - 0: Input. - * - 1: Output. - * @return None - * - * Note: All remaining bits that are not activated in bitValue (value '0') - * will not be effected by this function. - **********************************************************************/ -void FIO_HalfWordSetDir(uint8_t portNum, uint8_t halfwordNum, uint16_t bitValue, uint8_t dir) -{ - GPIO_HalfWord_TypeDef *pFIO = FIO_HalfWordGetPointer(portNum); - if(pFIO != NULL) { - // Output direction - if (dir) { - // Upper - if(halfwordNum) { - pFIO->FIODIRU |= bitValue; - } - // lower - else { - pFIO->FIODIRL |= bitValue; - } - } - // Input direction - else { - // Upper - if(halfwordNum) { - pFIO->FIODIRU &= ~bitValue; - } - // lower - else { - pFIO->FIODIRL &= ~bitValue; - } - } - } -} - - -/*********************************************************************//** - * @brief Set mask value for bits in FIO port in halfword accessible style - * @param[in] portNum Port number, in range from 0 to 4 - * @param[in] halfwordNum HalfWord part number, should be 0 (lower) or 1(upper) - * @param[in] bitValue Value that contains all bits in to set, - * in range from 0 to 0xFFFF. - * @param[in] maskValue Mask value contains state value for each bit: - * - 0: not mask. - * - 1: mask. - * @return None - * - * Note: - * - All remaining bits that are not activated in bitValue (value '0') - * will not be effected by this function. - * - After executing this function, in mask register, value '0' on each bit - * enables an access to the corresponding physical pin via a read or write access, - * while value '1' on bit (masked) that corresponding pin will not be changed - * with write access and if read, will not be reflected in the updated pin. - **********************************************************************/ -void FIO_HalfWordSetMask(uint8_t portNum, uint8_t halfwordNum, uint16_t bitValue, uint8_t maskValue) -{ - GPIO_HalfWord_TypeDef *pFIO = FIO_HalfWordGetPointer(portNum); - if(pFIO != NULL) { - // Mask - if (maskValue){ - // Upper - if(halfwordNum) { - pFIO->FIOMASKU |= bitValue; - } - // lower - else { - pFIO->FIOMASKL |= bitValue; - } - } - // Un-mask - else { - // Upper - if(halfwordNum) { - pFIO->FIOMASKU &= ~bitValue; - } - // lower - else { - pFIO->FIOMASKL &= ~bitValue; - } - } - } -} - - -/*********************************************************************//** - * @brief Set bits for FIO port in halfword accessible style - * @param[in] portNum Port number, in range from 0 to 4 - * @param[in] halfwordNum HalfWord part number, should be 0 (lower) or 1(upper) - * @param[in] bitValue Value that contains all bits in to set, - * in range from 0 to 0xFFFF. - * @return None - * - * Note: - * - For all bits that has been set as input direction, this function will - * not effect. - * - For all remaining bits that are not activated in bitValue (value '0') - * will not be effected by this function. - **********************************************************************/ -void FIO_HalfWordSetValue(uint8_t portNum, uint8_t halfwordNum, uint16_t bitValue) -{ - GPIO_HalfWord_TypeDef *pFIO = FIO_HalfWordGetPointer(portNum); - if(pFIO != NULL) { - // Upper - if(halfwordNum) { - pFIO->FIOSETU = bitValue; - } - // lower - else { - pFIO->FIOSETL = bitValue; - } - } -} - - -/*********************************************************************//** - * @brief Clear bits for FIO port in halfword accessible style - * @param[in] portNum Port number, in range from 0 to 4 - * @param[in] halfwordNum HalfWord part number, should be 0 (lower) or 1(upper) - * @param[in] bitValue Value that contains all bits in to clear, - * in range from 0 to 0xFFFF. - * @return None - * - * Note: - * - For all bits that has been set as input direction, this function will - * not effect. - * - For all remaining bits that are not activated in bitValue (value '0') - * will not be effected by this function. - **********************************************************************/ -void FIO_HalfWordClearValue(uint8_t portNum, uint8_t halfwordNum, uint16_t bitValue) -{ - GPIO_HalfWord_TypeDef *pFIO = FIO_HalfWordGetPointer(portNum); - if(pFIO != NULL) { - // Upper - if(halfwordNum) { - pFIO->FIOCLRU = bitValue; - } - // lower - else { - pFIO->FIOCLRL = bitValue; - } - } -} - - -/*********************************************************************//** - * @brief Read Current state on port pin that have input direction of GPIO - * in halfword accessible style. - * @param[in] portNum Port number, in range from 0 to 4 - * @param[in] halfwordNum HalfWord part number, should be 0 (lower) or 1(upper) - * @return Current value of FIO port pin of specified halfword. - * Note: Return value contain state of each port pin (bit) on that FIO regardless - * its direction is input or output. - **********************************************************************/ -uint16_t FIO_HalfWordReadValue(uint8_t portNum, uint8_t halfwordNum) -{ - GPIO_HalfWord_TypeDef *pFIO = FIO_HalfWordGetPointer(portNum); - if(pFIO != NULL) { - // Upper - if(halfwordNum) { - return (pFIO->FIOPINU); - } - // lower - else { - return (pFIO->FIOPINL); - } - } - return (0); -} - - -/* FIO Byte accessible ------------------------------------------------------------ */ - -/*********************************************************************//** - * @brief Set direction for FIO port in byte accessible style - * @param[in] portNum Port number, in range from 0 to 4 - * @param[in] byteNum Byte part number, should be in range from 0 to 3 - * @param[in] bitValue Value that contains all bits in to set direction, - * in range from 0 to 0xFF. - * @param[in] dir Direction value, should be: - * - 0: Input. - * - 1: Output. - * @return None - * - * Note: All remaining bits that are not activated in bitValue (value '0') - * will not be effected by this function. - **********************************************************************/ -void FIO_ByteSetDir(uint8_t portNum, uint8_t byteNum, uint8_t bitValue, uint8_t dir) -{ - GPIO_Byte_TypeDef *pFIO = FIO_ByteGetPointer(portNum); - if(pFIO != NULL) { - // Output direction - if (dir) { - if (byteNum <= 3) { - pFIO->FIODIR[byteNum] |= bitValue; - } - } - // Input direction - else { - if (byteNum <= 3) { - pFIO->FIODIR[byteNum] &= ~bitValue; - } - } - } -} - -/*********************************************************************//** - * @brief Set mask value for bits in FIO port in byte accessible style - * @param[in] portNum Port number, in range from 0 to 4 - * @param[in] byteNum Byte part number, should be in range from 0 to 3 - * @param[in] bitValue Value that contains all bits in to set mask, - * in range from 0 to 0xFF. - * @param[in] maskValue Mask value contains state value for each bit: - * - 0: not mask. - * - 1: mask. - * @return None - * - * Note: - * - All remaining bits that are not activated in bitValue (value '0') - * will not be effected by this function. - * - After executing this function, in mask register, value '0' on each bit - * enables an access to the corresponding physical pin via a read or write access, - * while value '1' on bit (masked) that corresponding pin will not be changed - * with write access and if read, will not be reflected in the updated pin. - **********************************************************************/ -void FIO_ByteSetMask(uint8_t portNum, uint8_t byteNum, uint8_t bitValue, uint8_t maskValue) -{ - GPIO_Byte_TypeDef *pFIO = FIO_ByteGetPointer(portNum); - if(pFIO != NULL) { - // Mask - if (maskValue) { - if (byteNum <= 3) { - pFIO->FIOMASK[byteNum] |= bitValue; - } - } - // Un-mask - else { - if (byteNum <= 3) { - pFIO->FIOMASK[byteNum] &= ~bitValue; - } - } - } -} - - -/*********************************************************************//** - * @brief Set bits for FIO port in byte accessible style - * @param[in] portNum Port number, in range from 0 to 4 - * @param[in] byteNum Byte part number, should be in range from 0 to 3 - * @param[in] bitValue Value that contains all bits in to set, - * in range from 0 to 0xFF. - * @return None - * - * Note: - * - For all bits that has been set as input direction, this function will - * not effect. - * - For all remaining bits that are not activated in bitValue (value '0') - * will not be effected by this function. - **********************************************************************/ -void FIO_ByteSetValue(uint8_t portNum, uint8_t byteNum, uint8_t bitValue) -{ - GPIO_Byte_TypeDef *pFIO = FIO_ByteGetPointer(portNum); - if (pFIO != NULL) { - if (byteNum <= 3){ - pFIO->FIOSET[byteNum] = bitValue; - } - } -} - - -/*********************************************************************//** - * @brief Clear bits for FIO port in byte accessible style - * @param[in] portNum Port number, in range from 0 to 4 - * @param[in] byteNum Byte part number, should be in range from 0 to 3 - * @param[in] bitValue Value that contains all bits in to clear, - * in range from 0 to 0xFF. - * @return None - * - * Note: - * - For all bits that has been set as input direction, this function will - * not effect. - * - For all remaining bits that are not activated in bitValue (value '0') - * will not be effected by this function. - **********************************************************************/ -void FIO_ByteClearValue(uint8_t portNum, uint8_t byteNum, uint8_t bitValue) -{ - GPIO_Byte_TypeDef *pFIO = FIO_ByteGetPointer(portNum); - if (pFIO != NULL) { - if (byteNum <= 3){ - pFIO->FIOCLR[byteNum] = bitValue; - } - } -} - - -/*********************************************************************//** - * @brief Read Current state on port pin that have input direction of GPIO - * in byte accessible style. - * @param[in] portNum Port number, in range from 0 to 4 - * @param[in] byteNum Byte part number, should be in range from 0 to 3 - * @return Current value of FIO port pin of specified byte part. - * Note: Return value contain state of each port pin (bit) on that FIO regardless - * its direction is input or output. - **********************************************************************/ -uint8_t FIO_ByteReadValue(uint8_t portNum, uint8_t byteNum) -{ - GPIO_Byte_TypeDef *pFIO = FIO_ByteGetPointer(portNum); - if (pFIO != NULL) { - if (byteNum <= 3){ - return (pFIO->FIOPIN[byteNum]); - } - } - return (0); -} - -/** - * @} - */ - -#endif /* _GPIO */ - -/** - * @} - */ - -/* --------------------------------- End Of File ------------------------------ */ -#endif /* __LPC17XX__ */