经不住诱惑，今天开始玩STM8！麻烦过来人进来讲讲心得-第5页回答

1楼-- · 2019-12-29 14:13

I use a template + modules for pretty much all of my projects.

the following is for iar ewstm8.

here is the template for main.c

#include <iostm8.h>
#include "gpio.h"
//#include "tmr2.h" //we use tim2
//#include "tmr3.h" //we use tim3
//#include "tmr4.h" //we use tim3
//hardware configuration
//end hardware configuration
void mcu_init(void) {
}
int main( void ) {
mcu_init(); //reset the mcu
while (1) {
}
return 0;
}

复制代码

millwood0

2楼-- · 2019-12-29 15:48

here is gpio.h

#ifndef __GPIO_H
#define __GPIO_H
//port-related macros for stm8s
//DEFAULT: OPEN DRAIN OUTPUT
//set Px_CR1 and clear Px_CR2 to turn to push_pull output
#define IO_SET(port, bits) port |= (bits) //set bits on port
#define IO_CLR(port, bits) port &=~(bits) //clear bits on port
#define IO_FLP(port, bits) port ^= (bits) //flip bits on port
#define IO_GET(port, bits) ((port) & (bits)) //return bits on port
#define IO_OUT(ddr, bits) ddr |= (bits) //set bits as output. stm8s: sets a bit to make it an output
#define IO_IN(ddr, bits) ddr &=~(bits) //set bits as input. stm8s: clears a bit to make it an input
#define NOP() asm("nop") //nop
#define NOP2() {NOP(); NOP();}
#define NOP4() {NOP2(); NOP2();}
#define NOP8() {NOP4(); NOP4();}
#define NOP16() {NOP8(); NOP8();}
#ifndef ei
#define ei() asm("rim") //enable all interrupts
#endif
#ifndef di
#define di() asm("sim") //disable all interrupts
#endif
#define __enable_interrupt() ei()
#define __disable_interrupt() di()
//fmaster = 16Mhz / 8 -> 2Mhz
//fcpu = fmaster / 1 -> 2Mhz
#define F_MASTER (16000000ul / 8) //fmaster -> default to hsi (16mhz), divided by 8
#define F_CPU (F_MASTER) //fcpu
//define ld1 on stm8sdiscovery board
#define LED1_PORT PD_ODR
#define LED1_DDR PD_DDR
#define LED1 (1<<0)
//#define LED1_ON() IO_CLR(LED1_PORT, LED1) //turn on the leds, assuming output mode
//#define LED1_OFF() IO_SET(LED1_PORT, LED1) //turn off the leds, assuming output mode
//#define LED1_FLP() IO_FLP(LED1_PORT, LED1) //flip leds
//void (*mcu_reset)(void) = 0x0000; //jump to 0x0000 -> software reset
//simple multiples
#define x1(val) (val) //multiply val by 1
#define x2(val) (((val) << 1)) //multiply val by 2
#define x3(val) (x2(val) + (val)) //multiply val by 3
#define x4(val) (((val) << 2)) //multiply val by 4
#define x5(val) (x4(val) + (val)) //multiply val by 5
#define x6(val) (x4(val) + x2(val)) //multiply val by 6
#define x7(val) (x6(val) + (val)) //multiply val by 7
#define x8(val) ((val) << 3) //multiply val by 8
#define x9(val) (x8(val) + (val)) //multiply val by 9
//multiples of 10s
#define x10(val) (x8(val) + x2(val)) //multiply val by 10
#define x100(val) (x10(x10(val))) //multiply val by 100
#define x1000(val) (x100(x10(val))) //multiply val by 1000
#define x1k(val) x1000(val) //multiply val by 1000
#define x10k(val) (x100(x100(val))) //multiply val by 10000
#define x20(val) (x2(x10(val)))
#define x30(val) (x3(x10(val)))
#define x40(val) (x4(x10(val)))
#define x50(val) (x5(x10(val)))
#define x60(val) (x6(x10(val)))
#define x70(val) (x7(x10(val)))
#define x80(val) (x8(x10(val)))
#define x90(val) (x9(x10(val)))
//multiples of 100s
#define x200(val) (x2(x100(val)))
#define x300(val) (x3(x100(val)))
#define x400(val) (x4(x100(val)))
#define x500(val) (x5(x100(val)))
#define x600(val) (x6(x100(val)))
#define x700(val) (x7(x100(val)))
#define x800(val) (x8(x100(val)))
#define x900(val) (x9(x100(val)))
//custom definitions
#define x34(val) (x30(val) + x4(val)) //multiply val by 34
#define x97(val) (x90(val) + x7(val)) //multiply val by 97x
#endif //__gpio_h_

复制代码you don't need to have all of it. it predefines LED1 (on PD0).

as well as F_CPU (running at 16Mhz / 8).

millwood0

3楼-- · 2019-12-29 21:13

to blink an led, you will need to introduce delay.

here is the software delay routines I use:

delay.h:

#ifndef __DELAY_H
#define __DELAY_H
void delay(unsigned char dly);
void delay_us(unsigned short us);
void delay_ms(unsigned short ms);
#endif //delay_h

复制代码delay.c

//simple example
/* Includes ------------------------------------------------------------------*/
//#include <iostm8.h>
//#include <stdio.h> //because we used printf
#include "gpio.h" //we use _nop_(), F_CPU
#include "delay.h" //we use software delays
/* Global variables ----------------------------------------------------------*/
//cpu running at 2Mhz
//#define _DLY_MS 158 //delay for EWAVR (USB1286)
//#define _DLY_MS 40 //delay for WINAVR debug mode(USB1286, no optimization)
//#define _DLY_MS 158 //delay for WINAVR release (USB1286)
//#define _DLY_MS 120 //delay for C51
//#define _DLY_MS 329 //delay for avr
//#define _DLY_MS 160 //delay for PIC18F46K20 @ 4Mhz
//#define _DLY_MS 200 //delay for PIC16F886
//#define _DLY_MS 984 //delay for LPC2106
//#define _DLY_MS 226 //lpc1343 on keil
#define _DLY_MS 215 //stm8s@2Mhz
//delay routines
void delay(unsigned char dly) { //waste some cycle
while (dly--)
continue;
}
//delay_us(1000) = 10ms
//delay_us(1) = 10us
void delay_us(unsigned short us) { //delay a us
delay(us); //delay the lsb
us = us >> 8; //retain the msb
while (us--) delay(0xff); //delay the msb
}
void delay_ms(unsigned short ms) { //delay ms
while (ms--) delay_us(_DLY_MS * (F_CPU / 2000000ul));
}

复制代码

millwood0

4楼-- · 2019-12-29 23:39

an led blinky would be something like this:

#include <iostm8.h>
#include "gpio.h"
#include "delay.h" //we use software delay
//#include "tmr2.h" //we use tim2
//#include "tmr3.h" //we use tim3
//#include "tmr4.h" //we use tim3
//hardware configuration
#define LED1_DLY 500 //led1 delay, in ms
//end hardware configuration
void mcu_init(void) {
IO_CLR(LED1_PORT, LED1); //clear led1
IO_OUT(LED1_DDR, LED1); //led1 as output
}
int main( void ) {
mcu_init(); //reset the mcu
while (1) {
delay_ms(LED1_DLY); //waste some time
IO_FLP(LED1_PORT, LED1); //flip led1
}
return 0;
}

复制代码it should work once you have it downloaded onto your chip.

n_mos

5楼-- · 2019-12-30 00:49

精彩回答 2 元偷偷看……

hellosky

6楼-- · 2019-12-30 01:17

我也在学

经不住诱惑，今天开始玩STM8！麻烦过来人进来讲讲心得

一周热门更多>

相关问题

相关文章

经不住诱惑，今天开始玩STM8！麻烦过来人进来讲讲心得

打开微信“扫一扫”，打开网页后点击屏幕右上角分享按钮

一周热门 更多>

相关问题

相关文章

采纳回答

编辑标签

举报内容

检举类型

检举原因

检举说明(必填)

一周热门更多>