ed2cf2a29d
- display_set_raw(digits[5], type) + 裸码模式: 绕过温度解码直接渲染段位字符 - apptest: 循环 0-15, 四数字位同显一字符, DIG4 固定 C - 仅 APP 改动, Boot 不动 (仍 V1.00.07) - docs/开发日志.md: 新增 §67
81 lines
2.7 KiB
C
81 lines
2.7 KiB
C
/**
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* @file app_display.h
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* @brief YF30137 7-segment display driver.
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*
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* The YF30137 is a 7-pin Charlieplexed temperature display:
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* - DIG1 = hundreds, DIG2 = tens, DIG3 = ones,
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* DIG4 = unit letter ("F" Fahrenheit / "C" Celsius), DIG5 = tenths
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* - DIG6 holds two single indicators: A6 = "deg F", B6 = decimal point
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*
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* A dedicated FreeRTOS task (display_task) scans the module continuously.
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* Every other task updates the display simply by calling display_set();
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* the scan task only reads the global state and never blocks callers.
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*/
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#ifndef __APP_DISPLAY_H__
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#define __APP_DISPLAY_H__
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stdint.h>
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#include "n32wb03x.h"
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/* Display type / unit (controls the DIG6 "deg F" indicator A6) */
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#define DISP_TYPE_CELSIUS 0u /* degree C: A6 off */
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#define DISP_TYPE_FAHRENHEIT 1u /* degree F: A6 on */
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/* Number base for the displayed value */
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#define DISP_BASE_DECIMAL 10u
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#define DISP_BASE_HEX 16u
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/**
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* @brief Update what the display should show (read by the scan task).
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* @param value temperature to display, clamped to 0.0..999.9 (1 decimal)
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* @param type DISP_TYPE_CELSIUS / DISP_TYPE_FAHRENHEIT (DIG6-A indicator)
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* @param base unused (kept for API compatibility)
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* @note Non-blocking; may be called from any task context.
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*/
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void display_set(float value, uint8_t type, uint8_t base);
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/**
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* @brief Show raw digit codes directly (bypasses the temperature decode).
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* Used by the display self-test to render every segment character.
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* @param digits 5 codes: 0..9, 0xA..0xF (A..F), CHAR_BLANK(0xFF),
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* CHAR_MINUS(0x10); index 3 is the DIG4 unit letter
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* @param type DISP_TYPE_CELSIUS / DISP_TYPE_FAHRENHEIT (DIG6-A indicator)
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*/
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void display_set_raw(const uint8_t digits[5], uint8_t type);
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/**
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* @brief Display driver FreeRTOS task: Charlieplexing scan loop, never returns.
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*/
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void display_task(void *pvParameters);
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/**
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* @brief Enable (1) / disable (0) the automatic Charlieplexing scan.
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* When disabled the scan task releases all 7 pins to high-impedance
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* so another task (e.g. the "dispset" CLI) can drive them manually.
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*/
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void display_auto_set(uint8_t on);
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/**
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* @brief @return 1 when the automatic scan is enabled.
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*/
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uint8_t display_auto_get(void);
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/**
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* @brief Map a display pin number (1..7) to its GPIO port + pin mask.
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* @param pin_no display pin number 1..7 (pin1=PB0 ... pin7=PA6)
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* @param port out: GPIO port
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* @param pin out: GPIO pin mask
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* @return 1 on success, 0 when pin_no is out of range.
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*/
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int display_pin_map(uint8_t pin_no, GPIO_Module** port, uint16_t* pin);
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#ifdef __cplusplus
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}
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#endif
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#endif /* __APP_DISPLAY_H__ */
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