/**
* The main function.
*/
int main( void )
{
/* Stop the watchdog timer. */
WDTCTL = WDTPW + WDTHOLD;
/* Setup MCLK 8MHz and SMCLK 1MHz */
set_mcu_speed_xt2_mclk_8MHz_smclk_1MHz();
/* Enable Interrupts */
eint();
uart0_init(UART0_CONFIG_1MHZ_115200);
uart0_register_callback(char_cb);
printf("CC1100 RXTX test program\r\n");
LEDS_INIT();
LEDS_OFF();
cc1100_init();
cc1100_cfg_append_status(CC1100_APPEND_STATUS_ENABLE);
cc1100_cfg_crc_autoflush(CC1100_CRC_AUTOFLUSH_DISABLE);
cc1100_cfg_white_data(CC1100_DATA_WHITENING_ENABLE);
cc1100_cfg_crc_en(CC1100_CRC_CALCULATION_ENABLE);
cc1100_cfg_freq_if(0x0C);
cc1100_cfg_fs_autocal(CC1100_AUTOCAL_NEVER);
cc1100_cfg_mod_format(CC1100_MODULATION_MSK);
cc1100_cfg_sync_mode(CC1100_SYNCMODE_30_32);
cc1100_cfg_manchester_en(CC1100_MANCHESTER_DISABLE);
printf("CC1100 initialized\r\nType 's' to send a message\r\n");
while(1)
{
// Enter RX
LED_RED_ON();
cc1100_cmd_idle();
cc1100_cmd_flush_rx();
cc1100_cmd_calibrate();
cc1100_cmd_rx();
cc1100_cfg_gdo0(CC1100_GDOx_SYNC_WORD);
cc1100_gdo0_int_set_falling_edge();
cc1100_gdo0_int_clear();
cc1100_gdo0_int_enable();
cc1100_gdo0_register_callback(rx_ok);
// Low Power Mode
LPM0;
// Check for send flag
if (send == 1) {
send = 0;
LED_RED_OFF();
cc1100_cmd_idle();
cc1100_cmd_flush_tx();
cc1100_cmd_calibrate();
cc1100_gdo0_int_disable();
frameseq ++;
length = sprintf((char *)frame, "Hello World #%i", frameseq);
printf("Sent : %s \r\n", frame);
cc1100_fifo_put(&length, 1);
cc1100_fifo_put(frame, length);
cc1100_cmd_tx();
// Wait for SYNC word sent
while (cc1100_gdo0_read() == 0);
// Wait for end of packet
while (cc1100_gdo0_read() != 0);
}
// Check for receive flag
if (receive == 1) {
receive = 0;
uint8_t i;
// verify CRC result
if ( !(cc1100_status_crc_lqi() & 0x80) ) {
continue;
}
cc1100_fifo_get(&length, 1);
if (length > 60) {
continue;
}
cc1100_fifo_get(frame, length+2);
uint16_t rssi = (uint16_t)frame[length];
int16_t rssi_d;
if (rssi >= 128)
rssi_d = (rssi-256)-140;
else
rssi_d = rssi-140;
printf("Frame received with RSSI=%d.%d dBm: ", rssi_d, 5*(rssi_d&0x1));
for (i=0; i<length; i++) {
printf("%c",frame[i]);
}
printf("\r\n");
LED_GREEN_TOGGLE();
}
}
return 0;
}
void mac_init(uint8_t channel)
{
// initialize the unique serial number chip and set node address accordingly
ds2411_init();
node_addr = (((uint16_t)ds2411_id.serial1)<<8) + (ds2411_id.serial0);
// seed the random number generator
srand(node_addr);
// reset callbacks
received_cb = 0x0;
sent_cb = 0x0;
error_cb = 0x0;
// initialize the timerB
timerB_init();
timerB_start_ACLK_div(1);
timerB_register_cb(ALARM_RETRY, check);
// configure the radio
cc1100_init();
cc1100_cmd_idle();
/* configure the radio behaviour */
cc1100_cfg_append_status(CC1100_APPEND_STATUS_ENABLE);
cc1100_cfg_crc_autoflush(CC1100_CRC_AUTOFLUSH_DISABLE);
cc1100_cfg_white_data(CC1100_DATA_WHITENING_ENABLE);
cc1100_cfg_crc_en(CC1100_CRC_CALCULATION_ENABLE);
cc1100_cfg_freq_if(0x0E);
cc1100_cfg_fs_autocal(CC1100_AUTOCAL_IDLE_TO_TX_RX);
cc1100_cfg_mod_format(CC1100_MODULATION_GFSK);
cc1100_cfg_sync_mode(CC1100_SYNCMODE_30_32);
cc1100_cfg_manchester_en(CC1100_MANCHESTER_DISABLE);
cc1100_cfg_cca_mode(CC1100_CCA_MODE_RSSI_PKT_RX);
// freq = 860MHz
cc1100_write_reg(CC1100_REG_FREQ2, 0x1F);
cc1100_write_reg(CC1100_REG_FREQ1, 0xDA);
cc1100_write_reg(CC1100_REG_FREQ0, 0x12);
//packet length to 61
cc1100_write_reg(CC1100_REG_PKTLEN, 0x3D);
// configure the radio channel
cc1100_cfg_chanspc_e(0x2);
cc1100_cfg_chanspc_m(0xF8);
cc1100_write_reg(CC1100_REG_DEVIATN, 0x47);
// rise CCA threshold
cc1100_cfg_carrier_sense_abs_thr(5);
// set channel bandwidth
cc1100_cfg_chanbw_e(1);
cc1100_cfg_chanbw_m(3);
// set data rate
cc1100_cfg_drate_e(0xB);
cc1100_cfg_drate_m(0x74);
// go to RX after RX and TX
cc1100_cfg_rxoff_mode(CC1100_RXOFF_MODE_IDLE);
cc1100_cfg_txoff_mode(CC1100_TXOFF_MODE_RX);
uint8_t table[1];
table[0] = 0x1E; // -15dBm 13.4mA
cc1100_cfg_patable(table, 1);
cc1100_cfg_pa_power(0);
// set IDLE state, flush everything, and start rx
cc1100_cmd_idle();
cc1100_cmd_flush_rx();
cc1100_cmd_flush_tx();
cc1100_cmd_calibrate();
// configure irq
cc1100_cfg_gdo0(CC1100_GDOx_SYNC_WORD);
cc1100_gdo0_int_set_falling_edge();
cc1100_gdo0_int_clear();
cc1100_gdo0_int_enable();
cc1100_gdo0_register_callback(rx_parse);
// start the machine
rx_set();
txframe.length = 0;
}