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Blink LED with timer

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This commit is contained in:
Alexander Heldt
2024-08-03 11:50:37 +02:00
parent 062a014c7c
commit a3c1de878a
10 changed files with 9001 additions and 954 deletions
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113
build/main.i
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@@ -1963,6 +1963,20 @@ extern intmax_t _wcstoimax_r(struct _reent *, const wchar_t *__restrict, wchar_t
extern uintmax_t wcstoumax(const wchar_t *__restrict, wchar_t **__restrict, int);
extern uintmax_t _wcstoumax_r(struct _reent *, const wchar_t *__restrict, wchar_t **__restrict, int);
# 2 "src/main.c" 2
# 1 "/nix/store/yr89i11mszv2az19r26l372zgaiivj1c-gcc-arm-embedded-12.3.rel1/lib/gcc/arm-none-eabi/12.3.1/include/stdbool.h" 1 3 4
# 29 "/nix/store/yr89i11mszv2az19r26l372zgaiivj1c-gcc-arm-embedded-12.3.rel1/lib/gcc/arm-none-eabi/12.3.1/include/stdbool.h" 3 4
#define _STDBOOL_H
#define bool _Bool
#define true ((_Bool)+1u)
#define false ((_Bool)+0u)
# 50 "/nix/store/yr89i11mszv2az19r26l372zgaiivj1c-gcc-arm-embedded-12.3.rel1/lib/gcc/arm-none-eabi/12.3.1/include/stdbool.h" 3 4
#define __bool_true_false_are_defined 1
# 3 "src/main.c" 2
# 1 "src/rcc.h" 1
#define RCC_H_
@@ -2085,26 +2099,17 @@ struct rcc {
#define RCC_APB1ENR_PWREN_BIT 28
#define RCC_APB1ENR_PWREN_CLOCK_ENABLE (1 << RCC_APB1ENR_PWREN_BIT)
# 3 "src/main.c" 2
#define RCC_APB1ENR_TIM4_BIT 2
#define RCC_APB1ENR_TIM4_ENABLE (1 << RCC_APB1ENR_TIM4_BIT)
# 5 "src/main.c" 2
# 1 "src/gpio.h" 1
#define GPIO_H_
# 1 "/nix/store/yr89i11mszv2az19r26l372zgaiivj1c-gcc-arm-embedded-12.3.rel1/lib/gcc/arm-none-eabi/12.3.1/include/stdbool.h" 1 3 4
# 29 "/nix/store/yr89i11mszv2az19r26l372zgaiivj1c-gcc-arm-embedded-12.3.rel1/lib/gcc/arm-none-eabi/12.3.1/include/stdbool.h" 3 4
#define _STDBOOL_H
#define bool _Bool
#define true ((_Bool)+1u)
#define false ((_Bool)+0u)
# 50 "/nix/store/yr89i11mszv2az19r26l372zgaiivj1c-gcc-arm-embedded-12.3.rel1/lib/gcc/arm-none-eabi/12.3.1/include/stdbool.h" 3 4
#define __bool_true_false_are_defined 1
# 5 "src/gpio.h" 2
struct gpio {
volatile uint32_t MODER;
volatile uint32_t OTYPER;
@@ -2143,7 +2148,7 @@ void gpio_write(uint16_t pin,
_Bool
# 40 "src/gpio.h"
val);
# 4 "src/main.c" 2
# 6 "src/main.c" 2
# 1 "src/flash.h" 1
#define FLASH_H_
@@ -2177,7 +2182,7 @@ struct flash {
#define FLASH_ACR_LATENCY_BIT 0
#define FLASH_ACR_LATENCY_MASK (0b1111)
#define FLASH_ACR_LATENCY(latency) ((latency & FLASH_ACR_LATENCY_MASK) << FLASH_ACR_LATENCY_BIT)
# 5 "src/main.c" 2
# 7 "src/main.c" 2
# 1 "src/pwr.h" 1
#define PWR_H_
@@ -2199,7 +2204,45 @@ struct pwr {
#define PWR_CR_VOS_BIT 14
#define PWR_CR_VOS_MASK (0b11)
#define PWR_CR_VOS(scale) ((scale & PWR_CR_VOS_MASK) << PWR_CR_VOS_BIT)
# 6 "src/main.c" 2
# 8 "src/main.c" 2
# 1 "src/timer.h" 1
#define TIMER_H_
struct timer {
volatile uint32_t CR1;
volatile uint32_t CR2;
volatile uint32_t SMCR;
volatile uint32_t DIER;
volatile uint32_t SR;
volatile uint32_t EGR;
volatile uint32_t CCMR1;
volatile uint32_t CCMR2;
volatile uint32_t CCER;
volatile uint32_t CNT;
volatile uint32_t PSC;
volatile uint32_t ARR;
volatile uint32_t RCR;
volatile uint32_t CCR1;
volatile uint32_t CCR2;
volatile uint32_t CCR3;
volatile uint32_t CCR4;
volatile uint32_t BDTR;
volatile uint32_t DCR;
volatile uint32_t DMAR;
};
#define TIM4_BASE_ADDR (0x40000800U)
#define TIM4 ((struct timer *) TIM4_BASE_ADDR)
#define TIM4_CR_CEN_BIT 0
#define TIM4_ENABLE (1 << TIM4_CR_CEN_BIT)
void tim4_init(void);
void tim4_start(void);
# 9 "src/main.c" 2
#define exit 42
@@ -2267,29 +2310,33 @@ static void system_clock_init(void) {
((struct rcc *) (0x40023800U))->CR &= ~(1 << 0);
}
static inline void spin(volatile uint32_t count) {
while (count--) (void) 0;
}
int main(void) {
(void) system_clock_init();
(void) tim4_init();
(void) tim4_start();
uint16_t led = (((('C') - 'A') << 8) | 13);
((struct rcc *) (0x40023800U))->AHB1ENR |= (1 << (led >> 8));
gpio_set_mode(led, GPIO_MODE_OUTPUT);
for (;;) {
gpio_write(led,
# 84 "src/main.c" 3 4
((_Bool)+1u)
# 84 "src/main.c"
);
spin(999999);
gpio_write(led,
# 86 "src/main.c" 3 4
((_Bool)+0u)
# 86 "src/main.c"
);
spin(999999);
uint16_t counter = ((struct timer *) (0x40000800U))->CNT;
# 87 "src/main.c" 3 4
_Bool
# 87 "src/main.c"
led_on =
# 87 "src/main.c" 3 4
((_Bool)+0u)
# 87 "src/main.c"
;
while(1) {
if ((((struct timer *) (0x40000800U))->CNT - counter) >= 250) {
led_on = !led_on;
gpio_write(led, led_on);
counter = ((struct timer *) (0x40000800U))->CNT;
}
};
return 42;