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This commit is contained in:
Alexander Heldt
2024-12-30 16:58:26 +01:00
parent 9e4aaeabd5
commit 953cc58655
26 changed files with 10968 additions and 1361 deletions
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build/gpio.i
+30 -11
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@@ -1,5 +1,5 @@
# 0 "src/gpio.c"
# 1 "/home/alex/code/own/c-compile-experiments//"
# 1 "/home/alex/code/own/stm32-falling-sand//"
# 0 "<built-in>"
#define __STDC__ 1
# 0 "<built-in>"
@@ -1995,17 +1995,23 @@ struct gpio {
volatile uint32_t ODR;
volatile uint32_t BSRR;
volatile uint32_t LCKR;
volatile uint32_t AFRL[2];
volatile uint32_t AFRH[2];
volatile uint32_t AFRL;
volatile uint32_t AFRH;
};
#define GPIO_AF_MCO_1 (0b0000)
#define GPIO_AF_USART2_RX (0b0111)
#define GPIO_AF_USART2_TX (0b0111)
#define GPIO_BASE_ADDR (0x40020000U)
#define GPIO_PORT_OFFSET (0x400U)
#define GPIO(port) ((struct gpio*)(uintptr_t)(GPIO_BASE_ADDR + (GPIO_PORT_OFFSET * port)))
#define BIT(x) (1 << x)
#define PIN(port,num) ((((port) - 'A') << 8) | num)
#define PORT(port) (((port) - 'A') << 8)
#define PIN(port,num) (PORT(port) | num)
#define PINNUM(pin) (pin & 0b1111)
@@ -2019,24 +2025,37 @@ typedef enum {
} GPIO_MODE;
void gpio_set_mode(uint16_t pin, GPIO_MODE mode);
void gpio_set_af(uint16_t pin, uint8_t af);
void gpio_write(uint16_t pin,
# 40 "src/gpio.h" 3 4
# 47 "src/gpio.h" 3 4
_Bool
# 40 "src/gpio.h"
# 47 "src/gpio.h"
val);
# 5 "src/gpio.c" 2
void gpio_set_mode(uint16_t pin, GPIO_MODE mode) {
struct gpio *gpio = ((struct gpio*)(uintptr_t)((0x40020000U) + ((0x400U) * (pin >> 8))));
int pn = (pin & 0b1111);
gpio->MODER &= ~(0x0011 << (pn * 2));
gpio->MODER |= (mode & 0b011) << (pn * 2);
gpio->MODER &= ~(0b11 << (pn * 2));
gpio->MODER |= (mode & 0b11) << (pn * 2);
}
void gpio_set_af(uint16_t pin, uint8_t af) {
struct gpio *gpio = ((struct gpio*)(uintptr_t)((0x40020000U) + ((0x400U) * (pin >> 8))));
int pn = (pin & 0b1111);
if (pn < 8) {
gpio->AFRL &= ~(0b1111 << (pn * 4));
gpio->AFRL |= (af & 0b1111) << (pn * 4);
} else {
gpio->AFRH &= ~(0b1111 << (pn * 4));
gpio->AFRH |= (af & 0b1111) << (pn * 4);
}
}
void gpio_write(uint16_t pin,
# 13 "src/gpio.c" 3 4
# 25 "src/gpio.c" 3 4
_Bool
# 13 "src/gpio.c"
# 25 "src/gpio.c"
val) {
struct gpio *gpio = ((struct gpio*)(uintptr_t)((0x40020000U) + ((0x400U) * (pin >> 8))));
gpio->BSRR = (0b0011 << (pin & 0b1111)) << (val ? 0 : 16);