pin_assignment.h

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#ifndef _PAPERDINK_PIN_ASSIGNMENT_H_
#define _PAPERDINK_PIN_ASSIGNMENT_H_
 
// PIN ASSIGNMENT
 
// I2C pins
#define SDA 16
#define SCL 17
 
// SPI pins
 
// SD card pins
#define SS    21
#define SD_CS SS
#define SD_EN 5
 
// E-paper pins
#define EPD_CS   22
#define EPD_DC   15
#define EPD_BUSY 34
#define EPD_EN   12
#define EPD_RST  13
 
// PCF8574 pins
#define PCF_INT   35
#define SD_CD     P4 // input
#define EXT_GPIO1 P5
#define EXT_GPIO2 P6
#define EXT_GPIO3 P7
#define PCF_I2C_ADDR 0x38
 
// LiPo
#define CHARGE_PIN 36
#define BATT_EN    25
#define BATT_VOLT  39
 
// Buzzer
#define BUZR 26
 
// Buttons
// Top to bottom
#define BUTTON_1_PIN 14
#define BUTTON_1_RTC_GPIO 16
 
#define BUTTON_2_PIN 27
#define BUTTON_2_RTC_GPIO 17
 
#define BUTTON_3_PIN 4
#define BUTTON_3_RTC_GPIO 10
 
#define BUTTON_4_PIN 2
#define BUTTON_4_RTC_GPIO 12
 
#endif /* _PAPERDINK_PIN_ASSIGNMENT_H_ */