#define F_CPU 8000000UL #include #include "RS485.h" #include #include #define TRUE (1u) #define FALSE (0u) ISR(USART0_RX_vect) { uint8_t uartData = UDR0; /* Read away */ } ISR(USART1_RX_vect) { uint8_t uartData = UDR1; Uart0_Transmit8bit(uartData); } int main(void) { /* MAX487 --> RX mode */ DDRC |= (1<