static unsigned char twi_read_byte(bool nack) { unsigned char byte = 0; unsigned char bit; for (bit = 0; bit < 8; bit++) byte = (byte << 1) | twi_read_bit(); twi_write_bit(nack); return byte; }
static bool twi_write_byte(unsigned char byte) { unsigned char bit; for (bit = 0; bit < 8; bit++) { twi_write_bit(byte & 0x80); byte <<= 1; } return !twi_read_bit();//NACK/ACK }
static uint8_t ICACHE_FLASH_ATTR twi_read_byte(bool nack) { uint8_t byte = 0; uint8_t bit; for (bit = 0; bit < 8; bit++) byte = (byte << 1) | twi_read_bit(); twi_write_bit(nack); return byte; }
static bool ICACHE_FLASH_ATTR twi_write_byte(uint8_t byte) { uint8_t bit; for (bit = 0; bit < 8; bit++) { twi_write_bit(byte & 0x80); byte <<= 1; } return !twi_read_bit(); //NACK, ACK }