uint8_t rfm70ReceivePayload()
{
uint8_t len;
uint8_t status;
uint8_t fifo_status;
uint8_t rx_buf[32];
bool msg_received = false;
fifo_status = rfm70ReadRegValue(RFM70_REG_FIFO_STATUS);
status = rfm70ReadRegValue(RFM70_REG_STATUS);
// check if receive data ready (RX_DR) interrupt
if (status & RFM70_IRQ_STATUS_RX_DR)
{
msg_received = true;
do
{
// read length of playload packet
len = rfm70ReadRegValue(RFM70_CMD_RX_PL_WID);
if (len >= 5 && len <= 32) // 32 = max packet length
{
// read data from FIFO Buffer
rfm70ReadRegPgmBuf(RFM70_CMD_RD_RX_PLOAD, rx_buf, len);
// Send message with ack payload of the beacon message
// if receiver allows and button is pressed
if (stateChanged)
{
stateChanged = false;
rfm70SendPayload(buf, 32, -1, 1);
}
}
else
{
// flush RX FIFO
rfm70WriteRegPgmBuf((uint8_t *)RFM70_CMD_FLUSH_RX, sizeof(RFM70_CMD_FLUSH_RX));
}
fifo_status = rfm70ReadRegValue(RFM70_REG_FIFO_STATUS);
} while ((fifo_status & RFM70_FIFO_STATUS_RX_EMPTY) == 0);
}
rfm70WriteRegValue(RFM70_CMD_WRITE_REG | RFM70_REG_STATUS, status);
return msg_received;
}
uint8_t rfm70ReceivePayload(uint8_t *payload)
{
uint8_t len;
uint8_t status;
//uint8_t detect;
uint8_t fifo_status;
uint8_t rx_buf[32];
status = rfm70ReadRegValue(RFM70_REG_STATUS);
/*
detect = rfm70ReadRegValue(RFM70_REG_CD); // Read value of Carrier Detection register
if (fifo_status & RFM70_FIFO_STATUS_RX_FULL) {
return false;
}
if ((detect & RFM70_CARRIER_DETECTION) == 0x01) // Confirm that the CD bit is set high/low
{
cbi(PORTC, LED_YELLOW);
lcd_goto(1,0);
lcd_writeText("CD found ", 16);
}
else
{
sbi(PORTC, LED_YELLOW);
lcd_goto(1,0);
lcd_writeText("CD not found ", 16);
}
*/
//char charValue [6] = " ";
// check if receive data ready (RX_DR) interrupt
if (status & RFM70_IRQ_STATUS_RX_DR)
{
do
{
// read length of playload packet
len = rfm70ReadRegValue(RFM70_CMD_RX_PL_WID);
if (len <= 32) // 32 = max packet length
{
// read data from FIFO Buffer
rfm70ReadRegPgmBuf(RFM70_CMD_RD_RX_PLOAD, rx_buf, len);
sbi(PORTD, LED_RED);
_delay_ms(100);
cbi(PORTD, LED_RED);
nextDigit = &valueBuffer[sizeof(valueBuffer)];
*--nextDigit = 0xff; /* terminate with 0xff */
*--nextDigit = 0;
*--nextDigit = KEY_RETURN;
*--nextDigit = (rx_buf[0] & 0xf) + 4;
/*if(rx_buf[0]&1)
{
*--nextDigit = KEY_1;
}
else
{
*--nextDigit = KEY_0;
}
if(rx_buf[0]&2)
{
*--nextDigit = KEY_1;
}
else
{
*--nextDigit = KEY_0;
}
if(rx_buf[0]&4)
{
*--nextDigit = KEY_1;
}
else
{
*--nextDigit = KEY_0;
}
if(rx_buf[0]&8)
{
*--nextDigit = KEY_1;
}
else
{
*--nextDigit = KEY_0;
}*/
//itoa(len, charValue, 16);
//lcd_clear();
//lcd_goto(1,0);
//lcd_writeText(charValue, 2);
//itoa(rx_buf[0], charValue, 16);
//lcd_goto(1,3);
//lcd_writeText(charValue, 2);
//itoa(rx_buf[1], charValue, 16);
//lcd_goto(1,6);
//lcd_writeText(charValue, 2);
//itoa(rx_buf[2], charValue, 16);
//lcd_goto(1,9);
//lcd_writeText(charValue, 2);
}
else
{
// flush RX FIFO
rfm70WriteRegPgmBuf((uint8_t *)RFM70_CMD_FLUSH_RX, sizeof(RFM70_CMD_FLUSH_RX));
}
fifo_status = rfm70ReadRegValue(RFM70_REG_FIFO_STATUS);
} while ((fifo_status & RFM70_FIFO_STATUS_RX_EMPTY) == 0);
if ((rx_buf[0] == 0xAA) && (rx_buf[1] == 0x80))
{
//sbi(PORTD, LED_RED);
_delay_ms(100);
//cbi(PORTD, LED_RED);
rfm70SetModeRX();
}
}
rfm70WriteRegValue(RFM70_CMD_WRITE_REG | RFM70_REG_STATUS, status);
return 0;
}