微控制器 01 STM32 LED燈

標頭檔案 stm32f10x.h

1#ifndef __stm32f10x_h
2#define __stm32f10x_h34
//用來存放stm32暫存器對映的**56
//外設  perirhral78
#define  periph_base               ((unsigned int)0x40000000)
9#define  apb1periph_base           periph_base
10#define  apb2periph_base          (periph_base + 0x10000)
11#define  ahbperiph_base           (periph_base + 0x20000)
1213
14#define  rcc_base                (ahbperiph_base + 0x1000)
15#define  gpiob_base              (apb2periph_base + 0x0c00)
1617
18#define  rcc_apb2enr            *(unsigned int*)(rcc_base + 0x18)
1920
#define  gpiob_crl              *(unsigned int*)(gpiob_base + 0x00)
21#define  gpiob_crh              *(unsigned int*)(gpiob_base + 0x04)
22#define  gpiob_idr              *(unsigned int*)(gpiob_base + 0x08)
23#define  gpiob_odr              *(unsigned int*)(gpiob_base + 0x0c)
24#define  gpiob_bsrr             *(unsigned int*)(gpiob_base + 0x10)
25#define  gpiob_brr              *(unsigned int*)(gpiob_base + 0x14)
26#define  gpiob_lckr             *(unsigned int*)(gpiob_base + 0x18)
2728 typedef unsigned int
uint32_t;
29 typedef unsigned short
uint16_t;
3031 typedef struct
32gpio_typedef;
4142
43 typedef struct
44rcc_typedef;
5657
58#define gpiob   ((gpio_typedef*)gpiob_base)
59#define rcc     ((rcc_typedef*)rcc_base)
6061
#endif /* __stm32f10x_h */

1

#ifndef __stm32f10x_h
2#define __stm32f10x_h34
//用來存放stm32暫存器對映的**56
//外設  perirhral78
#define  periph_base               ((unsigned int)0x40000000)
9#define  apb1periph_base           periph_base
10#define  apb2periph_base          (periph_base + 0x10000)
11#define  ahbperiph_base           (periph_base + 0x20000)
1213
14#define  rcc_base                (ahbperiph_base + 0x1000)
15#define  gpiob_base              (apb2periph_base + 0x0c00)
1617
18#define  rcc_apb2enr            *(unsigned int*)(rcc_base + 0x18)
1920
#define  gpiob_crl              *(unsigned int*)(gpiob_base + 0x00)
21#define  gpiob_crh              *(unsigned int*)(gpiob_base + 0x04)
22#define  gpiob_idr              *(unsigned int*)(gpiob_base + 0x08)
23#define  gpiob_odr              *(unsigned int*)(gpiob_base + 0x0c)
24#define  gpiob_bsrr             *(unsigned int*)(gpiob_base + 0x10)
25#define  gpiob_brr              *(unsigned int*)(gpiob_base + 0x14)
26#define  gpiob_lckr             *(unsigned int*)(gpiob_base + 0x18)
2728 typedef unsigned int
uint32_t;
29 typedef unsigned short
uint16_t;
3031 typedef struct
32gpio_typedef;
4142
43 typedef struct
44rcc_typedef;
5657
58#define gpiob   ((gpio_typedef*)gpiob_base)
59#define rcc     ((rcc_typedef*)rcc_base)
6061
#endif /* __stm32f10x_h */

main.c

1

//#if 023
//#include 45
//sbit led  = p0^067
//void main(void)8//
1314
//#endif
1516
1718 #include "
stm32f10x.h
"19 #include "
stm32f10x_gpio.h"20
21//
#define   led_g_gpio_port                   gpiob
22//
#define   led_g_gpio_clk_enable            (rcc->apb2enr  |=  ( (1) << 3 ))
23//
#define   led_g_gpio_pin                    gpio_pin_0
2425
#define   led_g_gpio_port                   gpiob
26#define   led_g_gpio_clk_enable            (rcc->apb2enr  |=  ( (1) << 3 ))
27#define   led_g_gpio_pin                    gpio_pin_0
2829
void
delay(uint32_t count)
3033
34int main (void)35
103104
#endif
105}
106107
108void systeminit(void
)109

**來自野火

實現從 記憶體—暫存器—結構體+指標—初始化結構體外設函式的過渡。

課程完成了對於內部函式組成的講解

點led燈的基本流程

1、gpiob的埠時鐘

2、pin/mode/speed設定並輸入init函式

3、通過gpio_setbits()/gpio_rsestbits()完成引腳的開關

將關鍵內容通過巨集定義，使得接下來遷移更方便

#define led_g_gpio_port gpiob

#define led_g_gpio_pin gpio_pin_0

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