184 lines
5.0 KiB
C
184 lines
5.0 KiB
C
/**
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****************************************************************************************
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*
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* @file gpio.h
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*
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* @brief Header file - GPIO Driver
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*
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****************************************************************************************
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*/
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#ifndef _GPIO_H_
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#define _GPIO_H_
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#include <stdint.h>
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#include "iopad.h"
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/*
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* DEFINES
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****************************************************************************************
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*/
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#if !defined(BIT)
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#define BIT(n) (1UL << (n))
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#endif
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/// Index of gpio bits
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enum gpio_bits
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{
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GPIO00 = (1UL << PA00),
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GPIO01 = (1UL << PA01),
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GPIO02 = (1UL << PA02),
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GPIO03 = (1UL << PA03),
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GPIO04 = (1UL << PA04),
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GPIO05 = (1UL << PA05),
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GPIO06 = (1UL << PA06),
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GPIO07 = (1UL << PA07),
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GPIO08 = (1UL << PA08),
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GPIO09 = (1UL << PA09),
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GPIO10 = (1UL << PA10),
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GPIO11 = (1UL << PA11),
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GPIO12 = (1UL << PA12),
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GPIO13 = (1UL << PA13),
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GPIO14 = (1UL << PA14),
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GPIO15 = (1UL << PA15),
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GPIO16 = (1UL << PA16),
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GPIO17 = (1UL << PA17),
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GPIO18 = (1UL << PA18),
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GPIO19 = (1UL << PA19),
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};
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/// Type of gpio output
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enum gpio_out_typ
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{
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OE_LOW = 0,
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OE_HIGH = 1,
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};
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/// Type of gpio input
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enum gpio_in_typ
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{
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IE_AIR = IOM_INPUT,
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IE_DOWN = IOM_INPUT | IOM_PULLDOWN,
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IE_UP = IOM_INPUT | IOM_PULLUP,
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};
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/*
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* MACROS DECLARATION
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****************************************************************************************
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*/
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#include "reg_gpio.h"
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/// Set gpio data to 1 (output High) - only write 1 effect
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#define GPIO_DAT_SET(bits) ( GPIO->DAT_SET = (uint32_t)(bits) )
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/// Clear gpio data to 0 (output Low) - only write 1 effect
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#define GPIO_DAT_CLR(bits) ( GPIO->DAT_CLR = (uint32_t)(bits) )
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/// Toggle gpio data (state overturn) - only write 1 effect
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#define GPIO_DAT_TOG(bits) ( GPIO->DAT_TOG = (uint32_t)(bits) )
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/// Mask gpio data operation - write 1: can't set/clear/toggle, 0: normal
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#define GPIO_DAT_MSK(bits) ( GPIO->DAT_MSK = (uint32_t)(bits) )
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/// Get gpio data mask - Read 1: mask, 0: not mask
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#define GPIO_DAT_MSK_GET() ( GPIO->DAT_MSK )
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/// Set gpio data all config - write 1: High, 0: Low
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#define GPIO_DAT_CFG(bits) ( GPIO->DAT = (uint32_t)(bits) )
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/// Get gpio data all config - Read 1: High, 0: Low
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#define GPIO_DAT_GET() ( GPIO->DAT )
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/// Set gpio dir to 1 (enable output) - only write 1 effect
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#define GPIO_DIR_SET(bits) ( GPIO->DIR_SET = (uint32_t)(bits) )
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/// Clear gpio dir to 0 (disable output) - only write 1 effect
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#define GPIO_DIR_CLR(bits) ( GPIO->DIR_CLR = (uint32_t)(bits) )
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/// Toggle gpio dir (state overturn) - only write 1 effect
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#define GPIO_DIR_TOG(bits) ( GPIO->DIR_TOG = (uint32_t)(bits) )
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/// Mask gpio dir operation - write 1: can't set/clear/toggle, 0: normal
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#define GPIO_DIR_MSK(bits) ( GPIO->DIR_MSK = (uint32_t)(bits) )
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/// Get gpio dir mask - Read 1: mask, 0: not mask
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#define GPIO_DIR_MSK_GET() ( GPIO->DIR_MSK )
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/// Set gpio dir all config - write 1: Enable, 0: Disable
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#define GPIO_DIR_CFG(bits) ( GPIO->DIR = (uint32_t)(bits) )
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/// Get gpio dir all config - Read 1: Enable, 0: Disable
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#define GPIO_DIR_GET() ( GPIO->DIR )
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/// Get gpio input state (1: High, 0: Low), enable via iom_ctrl()
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#define GPIO_PIN_GET() ( GPIO->PIN )
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/// gpio output enable, low level
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#define GPIO_DIR_SET_LO(bits) dowl( GPIO_DAT_CLR(bits); GPIO_DIR_SET(bits); )
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/// gpio output enable, high level
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#define GPIO_DIR_SET_HI(bits) dowl( GPIO_DAT_SET(bits); GPIO_DIR_SET(bits); )
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/*
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* FUNCTION DECLARATION
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****************************************************************************************
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*/
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static inline void gpio_set_hiz(uint8_t pad)
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{
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// disable output & input
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GPIO_DIR_CLR(1UL << pad);
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iom_ctrl(pad, IOM_HIZ);
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}
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static inline void gpio_dir_output(uint8_t pad, uint8_t oe)
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{
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uint32_t bits = 1UL << pad;
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if (oe == OE_HIGH)
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{
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GPIO_DAT_SET(bits);
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}
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else
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{
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GPIO_DAT_CLR(bits);
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}
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GPIO_DIR_SET(bits);
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}
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static inline void gpio_put(uint8_t pad, uint8_t val)
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{
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if (val == OE_HIGH)
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{
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GPIO_DAT_SET(1UL << pad);
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}
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else
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{
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GPIO_DAT_CLR(1UL << pad);
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}
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}
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static inline void gpio_put_hi(uint8_t pad)
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{
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GPIO_DAT_SET(1UL << pad);
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}
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static inline void gpio_put_lo(uint8_t pad)
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{
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GPIO_DAT_CLR(1UL << pad);
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}
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static inline void gpio_dir_input(uint8_t pad, uint16_t ie)
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{
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iom_ctrl(pad, ie);
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}
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static inline bool gpio_get(uint8_t pad)
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{
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return ((GPIO_PIN_GET() >> pad) & 0x01);
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}
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static inline uint32_t gpio_get_all(void)
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{
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return GPIO_PIN_GET();
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}
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#endif
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