add pcf8574 i2c

2025-10-14 23:53:40 +08:00
parent 067f24cff0
commit 1cdc01f7cf
14 changed files with 478 additions and 220 deletions
@@ -1,6 +1,22 @@
 #ifndef __CHRG_PCF8574_H__
 #define __CHRG_PCF8574_H__

+#include <rtthread.h>
+#include <rtdevice.h>
+#include "chrg_i2c.h"
+
+// 读取所有8口IO状态
+extern rt_uint8_t chrg_pcf8574_get_port (eIDX_I2C idx);
+
+// 读取指定管脚状态值
+extern rt_uint8_t chrg_pcf8574_get_pin (eIDX_I2C idx, uint8_t bit);
+
+// 设置所有8口IO状态值
+extern int chrg_pcf8574_set_port (eIDX_I2C idx, uint8_t value);
+
+// 设置指定管脚状态值
+extern int chrg_pcf8574_set_pin (eIDX_I2C idx, uint8_t bit, uint8_t value);
+

 #endif