//*********************************************
//********* TIMER 1 interrupt handler *********
// Action: Test if RTC crystall is runing, like
// Toglle LEDx with frequency 1Hz.
//*********************************************
void __ISR(_TIMER_1_VECTOR, ipl3) Timer1Handler(void)
{
// clear the interrupt flag
mT1ClearIntFlag();
LED0_IO ^= 1;
// Check and display LEDs status into Terminal
USART_Test_Menu_Begin();
if(PORTDbits.RD0){
USART_Send_String("\n\r | LED1 | ON | :) ");
USART_Send_Data(0X01); // emoticon ASCII code
USART_Send_String(" |");
}
else{
USART_Send_String("\n\r | LED1 | OFF | :( ");
USART_Send_Data(0X02); // emoticon ASCII code
USART_Send_String(" |");
}
if(PORTDbits.RD1){
USART_Send_String("\n\r | LED2 | ON | :) ");
USART_Send_Data(0X01); // emoticon ASCII code
USART_Send_String(" |");
}
else{
USART_Send_String("\n\r | LED2 | OFF | :( ");
USART_Send_Data(0X02); // emoticon ASCII code
USART_Send_String(" |");
}
if(PORTDbits.RD2){
USART_Send_String("\n\r | LED3 | ON | :) ");
USART_Send_Data(0X01); // emoticon ASCII code
USART_Send_String(" |");
}
else{
USART_Send_String("\n\r | LED3 | OFF | :( ");
USART_Send_Data(0X02); // emoticon ASCII code
USART_Send_String(" |");
}
USART_Send_String("\n\r ------ -------- ---------- \n\r");
}
// Initialize the RFA1's low-power 2.4GHz transceiver.
// Sets up the state machine, and gets the radio into
// the RX_ON state. Interrupts are enabled for RX
// begin and end, as well as TX end.
uint8_t rfBegin(uint8_t channel)
{
USART_Send_String("RF Init started\n");
for (int i=0; i<128; i++)
{
radioRXBuffer.buffer[i] = 0;
}
radioRXBuffer.tail = 0;
radioRXBuffer.head = 0;
// Transceiver Pin Register -- TRXPR.
// This register can be used to reset the transceiver, without
// resetting the MCU.
TRXPR |= (1<<TRXRST); // TRXRST = 1 (Reset state, resets all registers)
_delay_ms(1);
//TRXPR &= ~(1<<TRXRST); //clear reset (RZ)
// Transceiver Interrupt Enable Mask - IRQ_MASK
// This register disables/enables individual radio interrupts.
// First, we'll disable IRQ and clear any pending IRQ's
IRQ_MASK = 0; // Disable all IRQs
// Transceiver State Control Register -- TRX_STATE
// This register controls the states of the radio.
// First, we'll set it to the TRX_OFF state.
TRX_STATE = TRX_OFF; // Set to TRX_OFF (0x08) state | 0xE0 = 11100000
_delay_ms(1);
USART_Send_String("\nTRX_STATE Set to off\n");
// Transceiver Status Register -- TRX_STATUS
// This read-only register contains the present state of the radio transceiver.
// After telling it to go to the TRX_OFF state, we'll make sure it's actually
// there.
if ((TRX_STATUS & 0x1F) != TRX_OFF )// Check to make sure state is correct | 0x1F = 00011111
return FAILURE; // Error, TRX isn't off
// Transceiver Control Register 1 - TRX_CTRL_1
// We'll use this register to turn on automatic CRC calculations.
TRX_CTRL_1 |= (1<<TX_AUTO_CRC_ON); // Enable automatic CRC calc.
// Enable RX start/end and TX end interrupts
IRQ_MASK = (1<<RX_START_EN) | (1<<RX_END_EN) | (1<<TX_END_EN);
// Transceiver Clear Channel Assessment (CCA) -- PHY_CC_CCA
// This register is used to set the channel. CCA_MODE should default
// to Energy Above Threshold Mode.
// Channel should be between 11 and 26 (2405 MHz to 2480 MHz)
if ((channel < 11) || (channel > 26)) channel = 11;
PHY_CC_CCA = (PHY_CC_CCA & 0xE0) | 11; // Set the channel to 11
// Set transceiver transmit power
PHY_TX_PWR = 0; //maximum power @ 3.5dBm / 2mW
// Finally, we'll enter into the RX_ON state. Now waiting for radio RX's, unless
// we go into a transmitting state.
TRX_STATE = (TRX_STATE & 0xE0) | RX_ON; // Default to receiver
USART_Send_String("RF Init OK\n");
return SUCCESS;
}
