gp_greenpak.c

#include <stdint.h>
#include "i2c.h"

// Blink 4Hz
static const uint8_t gp_nvmdata[] = {
#include "../../blink.array"
};

#define GP_CONTROL_CODE (0x01 << 4)

void gp_erase(void) {
	for(int i = 0; i < 16; i++) {
		uint8_t dat[] = {
				0xE3, // Erase Command Register
				0x80 | i // Page Address
		};
		i2c_send(GP_CONTROL_CODE | 0x02, dat, 2, 20);
	}
}

void gp_reg_write(void) {
	for(int i = 0; i < 16; i++) {
		uint8_t dat[1 + 16] = {i * 16};

		for(int j = 0; j < 16; j++) {
			dat[1 + j] = gp_nvmdata[i * 16 + j];
		}
		i2c_send(GP_CONTROL_CODE | 0x02, dat, 1 + 16, 20); // Write
	}
}

void gp_nvm_write(void) {
	for(int i = 0; i < 16; i++) {
		uint8_t dat[1 + 16] = {i * 16};

		for(int j = 0; j < 16; j++) {
			dat[1 + j] = gp_nvmdata[i * 16 + j];
		}
		i2c_send(GP_CONTROL_CODE | 0x04, dat, 1 + 16, 20); // Write
	}
}

void gp_invoke_por(void) {
	uint8_t dat[] = {0xC8, 2};
	i2c_send(GP_CONTROL_CODE | 0x02, dat, 2, 0);
}