314 lines
6.1 KiB
C
314 lines
6.1 KiB
C
#include "gpio.h"
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#define PxPU_BASE_ADDR 0x7EFE10
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void gpio_set_level(PIN_enum pin, uint8 level)
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{
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if(0x00 == (pin&0xF0)) //P0
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{
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if(level)
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P0 |= (1<<(pin&0xF));
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else
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P0 &= ~(1<<(pin&0xF));
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}
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else if(0x10 == (pin&0xF0)) //P1
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{
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if(level)
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P1 |= (1<<(pin&0xF));
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else
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P1 &= ~(1<<(pin&0xF));
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}
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else if(0x20 == (pin&0xF0)) //P2
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{
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if(level)
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P2 |= (1<<(pin&0xF));
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else
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P2 &= ~(1<<(pin&0xF));
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}
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else if(0x30 == (pin&0xF0)) //P3
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{
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if(level)
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P3 |= (1<<(pin&0xF));
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else
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P3 &= ~(1<<(pin&0xF));
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}
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else if(0x40 == (pin&0xF0)) //P4
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{
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if(level)
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P4 |= (1<<(pin&0xF));
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else
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P4 &= ~(1<<(pin&0xF));
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}
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else if(0x50 == (pin&0xF0)) //P5
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{
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if(level)
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P5 |= (1<<(pin&0xF));
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else
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P5 &= ~(1<<(pin&0xF));
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}
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else if(0x60 == (pin&0xF0)) //P6
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{
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if(level)
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P6 |= (1<<(pin&0xF));
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else
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P6 &= ~(1<<(pin&0xF));
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}
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else if(0x70 == (pin&0xF0)) //P7
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{
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if(level)
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P7 |= (1<<(pin&0xF));
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else
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P7 &= ~(1<<(pin&0xF));
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}
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}
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uint8 gpio_get_level(PIN_enum pin)
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{
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uint8 level;
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if(0x00 == (pin&0xF0)) //P0
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{
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level = (P0 & (1<<(pin&0xF))) ? 1 : 0;
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}
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else if(0x10 == (pin&0xF0)) //P1
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{
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level = (P1 & (1<<(pin&0xF))) ? 1 : 0;
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}
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else if(0x20 == (pin&0xF0)) //P2
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{
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level = (P2 & (1<<(pin&0xF))) ? 1 : 0;
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}
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else if(0x30 == (pin&0xF0)) //P3
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{
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level = (P3 & (1<<(pin&0xF))) ? 1 : 0;
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}
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else if(0x40 == (pin&0xF0)) //P4
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{
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level = (P4 & (1<<(pin&0xF))) ? 1 : 0;
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}
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else if(0x50 == (pin&0xF0)) //P5
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{
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level = (P5 & (1<<(pin&0xF))) ? 1 : 0;
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}
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else if(0x60 == (pin&0xF0)) //P6
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{
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level = (P6 & (1<<(pin&0xF))) ? 1 : 0;
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}
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else if(0x70 == (pin&0xF0)) //P7
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{
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level = (P7 & (1<<(pin&0xF))) ? 1 : 0;
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}
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return level;
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}
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//-------------------------------------------------------------------------------------------------------------------
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// @brief GPIO设置引脚上拉电阻设置
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// @param pin 选择引脚（P0_0-P7_7）
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// @param pull 设置上下拉电阻 NOPULL:不设置 PULLUP:上拉
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// @return void
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// Sample usage: gpio_pull_set(P0_0,NOPULL); // 设置P0.0引脚没有上下拉电阻
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//-------------------------------------------------------------------------------------------------------------------
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void gpio_pull_set(PIN_enum pin, PULL_enum pull)
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{
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if(PULLUP == pull)
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{
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(*(unsigned char volatile far *)(PxPU_BASE_ADDR + (pin >> 4))) |= (1<<(pin&0x0F));
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}
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else if(NOPULL == pull)
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{
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(*(unsigned char volatile far *)(PxPU_BASE_ADDR + (pin >> 4))) &= ~(1<<(pin&0x0F));
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}
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}
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//-------------------------------------------------------------------------------------------------------------------
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// @brief GPIO设置引脚模式
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// @param pin 选择引脚（P0_0-P5_4）
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// @param mode 引脚模式 GPIO:准双向口, GPO_PP:推挽输出, GPI_IMPEDANCE:高阻输入, GPI_OD:开漏输出
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// @return void
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// Sample usage: gpio_mode(P0_0,GPIO); // 设置P0.0设置为双向IO
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//-------------------------------------------------------------------------------------------------------------------
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void gpio_mode(PIN_enum pin, GPIOMODE_enum mode)
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{
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if(GPIO == mode)
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{
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if(0x00 == (pin&0xF0)) //P0
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{
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P0M1 &= ~(1<<(pin&0xF));
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P0M0 &= ~(1<<(pin&0xF));
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}
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if(0x10 == (pin&0xF0)) //P1
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{
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P1M1 &= ~(1<<(pin&0xF));
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P1M0 &= ~(1<<(pin&0xF));
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}
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if(0x20 == (pin&0xF0)) //P2
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{
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P2M1 &= ~(1<<(pin&0xF));
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P2M0 &= ~(1<<(pin&0xF));
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}
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if(0x30 == (pin&0xF0)) //P3
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{
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P3M1 &= ~(1<<(pin&0xF));
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P3M0 &= ~(1<<(pin&0xF));
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}
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if(0x40 == (pin&0xF0)) //P4
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{
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P4M1 &= ~(1<<(pin&0xF));
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P4M0 &= ~(1<<(pin&0xF));
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}
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if(0x50 == (pin&0xF0)) //P5
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{
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P5M1 &= ~(1<<(pin&0xF));
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P5M0 &= ~(1<<(pin&0xF));
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}
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if(0x60 == (pin&0xF0)) //P5
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{
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P6M1 &= ~(1<<(pin&0xF));
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P6M0 &= ~(1<<(pin&0xF));
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}
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if(0x70 == (pin&0xF0)) //P5
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{
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P7M1 &= ~(1<<(pin&0xF));
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P7M0 &= ~(1<<(pin&0xF));
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}
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}
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else if(GPO_PP == mode)
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{
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if(0x00 == (pin&0xF0)) //P0
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{
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P0M1 &= ~(1<<(pin&0xF));
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P0M0 |= (1<<(pin&0xF));
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}
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if(0x10 == (pin&0xF0)) //P1
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{
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P1M1 &= ~(1<<(pin&0xF));
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P1M0 |= (1<<(pin&0xF));
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}
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if(0x20 == (pin&0xF0)) //P2
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{
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P2M1 &= ~(1<<(pin&0xF));
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P2M0 |= (1<<(pin&0xF));
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}
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if(0x30 == (pin&0xF0)) //P3
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{
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P3M1 &= ~(1<<(pin&0xF));
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P3M0 |= (1<<(pin&0xF));
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}
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if(0x40 == (pin&0xF0)) //P4
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{
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P4M1 &= ~(1<<(pin&0xF));
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P4M0 |= (1<<(pin&0xF));
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}
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if(0x50 == (pin&0xF0)) //P5
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{
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P5M1 &= ~(1<<(pin&0xF));
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P5M0 |= (1<<(pin&0xF));
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}
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if(0x60 == (pin&0xF0)) //P4
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{
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P6M1 &= ~(1<<(pin&0xF));
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P6M0 |= (1<<(pin&0xF));
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}
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if(0x70 == (pin&0xF0)) //P5
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{
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P7M1 &= ~(1<<(pin&0xF));
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P7M0 |= (1<<(pin&0xF));
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}
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}
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else if(GPI_IMPEDANCE == mode)
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{
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if(0x00 == (pin&0xF0)) //P0
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{
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P0M1 |= (1<<(pin&0xF));
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P0M0 &= ~(1<<(pin&0xF));
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}
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if(0x10 == (pin&0xF0)) //P1
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{
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P1M1 |= (1<<(pin&0xF));
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P1M0 &= ~(1<<(pin&0xF));
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}
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if(0x20 == (pin&0xF0)) //P2
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{
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P2M1 |= (1<<(pin&0xF));
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P2M0 &= ~(1<<(pin&0xF));
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}
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if(0x30 == (pin&0xF0)) //P3
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{
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P3M1 |= (1<<(pin&0xF));
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P3M0 &= ~(1<<(pin&0xF));
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}
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if(0x40 == (pin&0xF0)) //P4
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{
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P4M1 |= (1<<(pin&0xF));
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P4M0 &= ~(1<<(pin&0xF));
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}
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if(0x50 == (pin&0xF0)) //P5
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{
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P5M1 |= (1<<(pin&0xF));
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P5M0 &= ~(1<<(pin&0xF));
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}
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if(0x60 == (pin&0xF0)) //P5
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{
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P6M1 |= (1<<(pin&0xF));
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P6M0 &= ~(1<<(pin&0xF));
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}
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if(0x70 == (pin&0xF0)) //P5
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{
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P7M1 |= (1<<(pin&0xF));
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P7M0 &= ~(1<<(pin&0xF));
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}
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}
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else if(GPI_OD == mode)
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{
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if(0x00 == (pin&0xF0)) //P0
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{
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P0M1 |= (1<<(pin&0xF));
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P0M0 |= (1<<(pin&0xF));
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}
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if(0x10 == (pin&0xF0)) //P1
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{
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P1M1 |= (1<<(pin&0xF));
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P1M0 |= (1<<(pin&0xF));
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}
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if(0x20 == (pin&0xF0)) //P2
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{
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P2M1 |= (1<<(pin&0xF));
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P2M0 |= (1<<(pin&0xF));
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}
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if(0x30 == (pin&0xF0)) //P3
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{
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P3M1 |= (1<<(pin&0xF));
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P3M0 |= (1<<(pin&0xF));
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}
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if(0x40 == (pin&0xF0)) //P4
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{
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P4M1 |= (1<<(pin&0xF));
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P4M0 |= (1<<(pin&0xF));
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}
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if(0x50 == (pin&0xF0)) //P5
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{
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P5M1 |= (1<<(pin&0xF));
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P5M0 |= (1<<(pin&0xF));
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}
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if(0x60 == (pin&0xF0)) //P5
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{
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P6M1 |= (1<<(pin&0xF));
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P6M0 |= (1<<(pin&0xF));
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}
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if(0x70 == (pin&0xF0)) //P5
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{
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P7M1 |= (1<<(pin&0xF));
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P7M0 |= (1<<(pin&0xF));
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}
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}
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}
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