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stmhal: Implement basic C-level pin HAL.

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This commit is contained in:
Damien George 2016-04-12 13:50:47 +01:00
parent d083712224
commit 69a1aaf654
2 changed files with 19 additions and 0 deletions
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9
stmhal/mphalport.c
View File

@ -119,6 +119,15 @@ void mp_hal_gpio_clock_enable(GPIO_TypeDef *gpio) {
} }
} }
void mp_hal_gpio_config(GPIO_TypeDef *gpio, uint32_t pin, uint32_t mode, uint32_t pull, uint32_t alt) {
mp_hal_gpio_clock_enable(gpio);
gpio->MODER = (gpio->MODER & ~(3 << (2 * pin))) | ((mode & 3) << (2 * pin));
gpio->OTYPER = (gpio->OTYPER & ~(1 << pin)) | ((mode >> 2) << pin);
gpio->OSPEEDR = (gpio->OSPEEDR & ~(3 << (2 * pin))) | (2 << (2 * pin)); // full speed
gpio->PUPDR = (gpio->PUPDR & ~(3 << (2 * pin))) | (pull << (2 * pin));
gpio->AFR[pin >> 3] = (gpio->AFR[pin >> 3] & ~(15 << (4 * (pin & 7)))) | (alt << (4 * (pin & 7)));
}
bool mp_hal_gpio_set_af(const pin_obj_t *pin, GPIO_InitTypeDef *init, uint8_t fn, uint8_t unit) { bool mp_hal_gpio_set_af(const pin_obj_t *pin, GPIO_InitTypeDef *init, uint8_t fn, uint8_t unit) {
mp_hal_gpio_clock_enable(pin->gpio); mp_hal_gpio_clock_enable(pin->gpio);

10
stmhal/mphalport.h
View File

@ -24,6 +24,7 @@
#define GPIO_read_output_pin(gpio, pin) (((gpio)->ODR >> (pin)) & 1) #define GPIO_read_output_pin(gpio, pin) (((gpio)->ODR >> (pin)) & 1)
void mp_hal_gpio_clock_enable(GPIO_TypeDef *gpio); void mp_hal_gpio_clock_enable(GPIO_TypeDef *gpio);
void mp_hal_gpio_config(GPIO_TypeDef *gpio, uint32_t pin, uint32_t mode, uint32_t pull, uint32_t alt);
bool mp_hal_gpio_set_af(const pin_obj_t *pin, GPIO_InitTypeDef *init, uint8_t fn, uint8_t unit); bool mp_hal_gpio_set_af(const pin_obj_t *pin, GPIO_InitTypeDef *init, uint8_t fn, uint8_t unit);
extern const unsigned char mp_hal_status_to_errno_table[4]; extern const unsigned char mp_hal_status_to_errno_table[4];
@ -33,3 +34,12 @@ void mp_hal_set_interrupt_char(int c); // -1 to disable
#define mp_hal_delay_ms HAL_Delay #define mp_hal_delay_ms HAL_Delay
#define mp_hal_ticks_ms HAL_GetTick #define mp_hal_ticks_ms HAL_GetTick
// C-level pin HAL
#include "stmhal/pin.h"
#define mp_hal_pin_obj_t pin_obj_t
#define mp_hal_get_pin_obj(o) (pin_obj_t*)pin_find(o)
#define mp_hal_pin_config_od(p) mp_hal_gpio_config((p)->gpio, (p)->pin, 5, 0, 0)
#define mp_hal_pin_low(p) GPIO_clear_pin((p)->gpio, (p)->pin_mask)
#define mp_hal_pin_od_high(p) GPIO_set_pin((p)->gpio, (p)->pin_mask)
#define mp_hal_pin_read(p) GPIO_read_pin((p)->gpio, (p)->pin)