dec34cfe0e
- display_decode 增加 type 入参, DIG4 按类型写 F(0x0F)/C(0x0C) - 仅 APP 改动, Boot 不动 (仍 V1.00.07) - docs/开发日志.md: 新增 §66
72 lines
2.2 KiB
C
72 lines
2.2 KiB
C
/**
|
|
* @file app_display.h
|
|
* @brief YF30137 7-segment display driver.
|
|
*
|
|
* The YF30137 is a 7-pin Charlieplexed temperature display:
|
|
* - DIG1 = hundreds, DIG2 = tens, DIG3 = ones,
|
|
* DIG4 = unit letter ("F" Fahrenheit / "C" Celsius), DIG5 = tenths
|
|
* - DIG6 holds two single indicators: A6 = "deg F", B6 = decimal point
|
|
*
|
|
* A dedicated FreeRTOS task (display_task) scans the module continuously.
|
|
* Every other task updates the display simply by calling display_set();
|
|
* the scan task only reads the global state and never blocks callers.
|
|
*/
|
|
#ifndef __APP_DISPLAY_H__
|
|
#define __APP_DISPLAY_H__
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
#include <stdint.h>
|
|
#include "n32wb03x.h"
|
|
|
|
/* Display type / unit (controls the DIG6 "deg F" indicator A6) */
|
|
#define DISP_TYPE_CELSIUS 0u /* degree C: A6 off */
|
|
#define DISP_TYPE_FAHRENHEIT 1u /* degree F: A6 on */
|
|
|
|
/* Number base for the displayed value */
|
|
#define DISP_BASE_DECIMAL 10u
|
|
#define DISP_BASE_HEX 16u
|
|
|
|
/**
|
|
* @brief Update what the display should show (read by the scan task).
|
|
* @param value temperature to display, clamped to 0.0..999.9 (1 decimal)
|
|
* @param type DISP_TYPE_CELSIUS / DISP_TYPE_FAHRENHEIT (DIG6-A indicator)
|
|
* @param base unused (kept for API compatibility)
|
|
* @note Non-blocking; may be called from any task context.
|
|
*/
|
|
void display_set(float value, uint8_t type, uint8_t base);
|
|
|
|
/**
|
|
* @brief Display driver FreeRTOS task: Charlieplexing scan loop, never returns.
|
|
*/
|
|
void display_task(void *pvParameters);
|
|
|
|
/**
|
|
* @brief Enable (1) / disable (0) the automatic Charlieplexing scan.
|
|
* When disabled the scan task releases all 7 pins to high-impedance
|
|
* so another task (e.g. the "dispset" CLI) can drive them manually.
|
|
*/
|
|
void display_auto_set(uint8_t on);
|
|
|
|
/**
|
|
* @brief @return 1 when the automatic scan is enabled.
|
|
*/
|
|
uint8_t display_auto_get(void);
|
|
|
|
/**
|
|
* @brief Map a display pin number (1..7) to its GPIO port + pin mask.
|
|
* @param pin_no display pin number 1..7 (pin1=PB0 ... pin7=PA6)
|
|
* @param port out: GPIO port
|
|
* @param pin out: GPIO pin mask
|
|
* @return 1 on success, 0 when pin_no is out of range.
|
|
*/
|
|
int display_pin_map(uint8_t pin_no, GPIO_Module** port, uint16_t* pin);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* __APP_DISPLAY_H__ */
|