pcf8584_error
if (pcf8584_error(s1, I2C_RD, i2c) != I2C_SUCCESS) {
if (pcf8584_error(s1, I2C_RD, i2c) != I2C_SUCCESS) {
if (pcf8584_error(s1, I2C_WR, i2c) != I2C_SUCCESS) {
if (pcf8584_error(s1, I2C_WR, i2c) != I2C_SUCCESS) {
if (pcf8584_error(s1, I2C_RD, i2c) != I2C_SUCCESS) {
if (pcf8584_error(s1, I2C_WR, i2c) != I2C_SUCCESS) {
static int pcf8584_error(int status, uint8_t rdwr, pcf8584_t *i2c);