【OK210试用体验】循环点亮 led 灯

2015-8-22 22:13:06

617595187 ( 楼主 ) 2015-8-22 22:13:06 只看该作者 4670 | 0 倒序浏览

个人是小白，手动烧写了linux系统。按照论坛里很牛的大神的帖子，熟悉烧写代码的流程，代码还是参考大神的，代码如下：
main.c文件
#include "stdint.h"

// IO port for controling LEDs
#define    GPM04_BASE 0xE0200340  // GPM04 Base Address
#define    GPD0_BASE 0xE02000A0
#define    GPCON_OFS 0x00       // Control Register Offset
#define    GPDAT_OFS 0x04       // Data Register Offset

#define    MP0_4CON_REG (*(volatile uint32_t *)(GPM04_BASE+GPCON_OFS))
#define    MP0_4DAT_REG (*(volatile uint32_t *)(GPM04_BASE+GPDAT_OFS))
#define    GPD0CON_REG (*(volatile uint32_t *)(GPD0_BASE+GPCON_OFS))
#define    GPD0DAT_REG (*(volatile uint32_t *)(GPD0_BASE+GPDAT_OFS))

#define    LED1 4 // GPM0_4->LED1
#define    LED2 5 // GPM0_5->LED2
#define    LED3 6 // GPM0_6->LED3
#define    LED4 7 // GPM0_7->LED4
#define       BEEP 0 // GPD0_0->BEEP

void Delay_ms(uint32_t Count)
{
//延时1ms,共延时nCountms
// Arm clock为400M,循环体每次30个Arm clock
int32_t temp1 = 13333;
int32_t temp2 = 0;
asm volatile (
      "Delay_ms_0:n"
      "mov  %0, %2n"
      "Delay_ms_1:n"
      "subs  %0, %0, #1n" // 单发射 cycle 1
      // 跳转清流水线,以下指令均只用作填充流水线
      "mov %1, %1n" // 双发射 cycle 1
      "mov %1, %1n" // 单发射 cycle 2
      "mov %1, %1n" // 单发射 cycle 3
      "mov %1, %1n" // 单发射 cycle 4
      "mov %1, %1n" // 单发射 cycle 5
      "mov %1, %1n" // 单发射 cycle 6
      "mov %1, %1n" // 单发射 cycle 7
      "mov %1, %1n" // 单发射 cycle 8
      "mov %1, %1n" // 单发射 cycle 9
      "mov %1, %1n" // 单发射 cycle 10
      "mov %1, %1n" // 单发射 cycle 11
      "mov %1, %1n" // 单发射 cycle 12
      "mov %1, %1n" // 单发射 cycle 13
      "mov %1, %1n" // 单发射 cycle 14
      "mov %1, %1n" // 单发射 cycle 15
      "mov %1, %1n" // 单发射 cycle 16
      "mov %0, %0n" // 单发射 cycle 17
      "bne.w Delay_ms_1n" // 跳转会清流水线,13级流水线,cycle 30
      "subs  %1, %1, #1n" // 调用者确保nCount不为0
      "bne.w Delay_ms_0n"
      : "+r"(temp2), "+r"(Count): "r"(temp1): "cc"
);
}

void Gpio_LED1(uint8_t On)
{
if (On) {
      MP0_4DAT_REG &= ~(1< } else {
      MP0_4DAT_REG |= (1< }
}

void Gpio_LED2(uint8_t On)
{
if (On) {
      MP0_4DAT_REG &= ~(1< } else {
      MP0_4DAT_REG |= (1< }
}

void Gpio_LED3(uint8_t On)
{
if (On) {
      MP0_4DAT_REG &= ~(1< } else {
      MP0_4DAT_REG |= (1< }
}

void Gpio_LED4(uint8_t On)
{
if (On) {
      MP0_4DAT_REG &= ~(1< } else {
      MP0_4DAT_REG |= (1< }
}

void Gpio_Beep(uint8_t On)
{
if (On) {
      GPD0DAT_REG |= (1< } else {
      GPD0DAT_REG &= ~(1< }
}

void Gpio_Init(void)
{
   // GPM04_4 output led1, off
MP0_4CON_REG = (MP0_4CON_REG & (~(0xf<<(LED1<<2)))) | (0x1<<(LED1<<2));
MP0_4DAT_REG |= (1<    // GPM04_5 output led2, off
MP0_4CON_REG = (MP0_4CON_REG & (~(0xf<<(LED2<<2)))) | (0x1<<(LED2<<2));
MP0_4DAT_REG |= (1<    // GPM04_6 output led3, off
MP0_4CON_REG = (MP0_4CON_REG & (~(0xf<<(LED3<<2)))) | (0x1<<(LED3<<2));
MP0_4DAT_REG |= (1<    // GPM04_7 output led4, off
MP0_4CON_REG = (MP0_4CON_REG & (~(0xf<<(LED4<<2)))) | (0x1<<(LED4<<2));
MP0_4DAT_REG |= (1< // Beep output, off
GPD0CON_REG = (GPD0CON_REG & (~(0xf<<(BEEP<<2)))) | (0x1<<(BEEP<<2));
GPD0DAT_REG &= ~(1< }

void main(void)
{
Gpio_Init();
while (1) {
      Gpio_LED1(1);
      Delay_ms(1000);
      Gpio_LED1(0);
      Gpio_LED2(1);
      Delay_ms(1000);
      Gpio_LED2(0);
      Gpio_LED3(1);
      Delay_ms(1000);
      Gpio_LED3(0);
      Gpio_LED4(1);
      Gpio_Beep(1);
      Delay_ms(1000);
      Gpio_LED4(0);
      Gpio_Beep(0);
}
}
led.s文件

SECTION .intvec:CODE:NOROOT(2)
PUBLIC __iar_program_start

ARM
__iar_program_start
EXTERN main
BLX main

END
下载工具使用的是sdboot.exe这个软件还是很好用的，手动用dnw1.01.EXE，可是没有找到OK210的驱动