Kai Liu / Mbed 2 deprecated CC1101_Transceiver_LPC1114

Codebase from CC1101_Transceiver, ported to LPC1114 Cortex-M0, will be merged with panStamp project to replace AVR/MSP MCU

Dependencies:   mbed

Fork of CC1101_Transceiver by Athanassios Mavrogeorgiadis

main.cpp@1:b8285d79c9a1, 2014-12-16 (annotated)

Committer:
allankliu
Date:
Tue Dec 16 09:00:27 2014 +0000
Revision:
1:b8285d79c9a1
Parent:
0:9df942ea84f4 
Change to LPC1114FN28 with updated mbed library

Who changed what in which revision?

UserRevisionLine numberNew contents of line
tmav123 0:9df942ea84f4 1 #include "mbed.h"
tmav123 0:9df942ea84f4 2 #include "CC1101.h"
tmav123 0:9df942ea84f4 3 #include "RingBuffer.h"
tmav123 0:9df942ea84f4 4
tmav123 0:9df942ea84f4 5 ///////////////////////////////////////////////////
tmav123 0:9df942ea84f4 6 Ticker timer;
tmav123 0:9df942ea84f4 7 CC1101 cc1101(p5, p6, p7, p8, p10);
tmav123 0:9df942ea84f4 8 DigitalIn gdo0(p9); // pin connected to gdo0 pin of CC1101 for checking that received a new packet
tmav123 0:9df942ea84f4 9
tmav123 0:9df942ea84f4 10 DigitalOut led1(LED1); // timer blink led
tmav123 0:9df942ea84f4 11 DigitalOut led2(LED2); // RX led
tmav123 0:9df942ea84f4 12 DigitalOut led3(LED3); // TX led
tmav123 0:9df942ea84f4 13 Serial pc(USBTX, USBRX); // tx, rx
tmav123 0:9df942ea84f4 14 RingBuffer pcRX(512); // ring buffer for the pc RX data
tmav123 0:9df942ea84f4 15 RingBuffer pcTX(512); // ring buffer for the pc TX data
tmav123 0:9df942ea84f4 16 Timeout pcRXtimeout;
tmav123 0:9df942ea84f4 17 Timeout led2timeout;
tmav123 0:9df942ea84f4 18 Timeout led3timeout;
tmav123 0:9df942ea84f4 19 unsigned char buffer[128];
tmav123 0:9df942ea84f4 20 ///////////////////////////////////////////////////
tmav123 0:9df942ea84f4 21 void led2timeout_func()
tmav123 0:9df942ea84f4 22 {
tmav123 0:9df942ea84f4 23 led2 = 0;
tmav123 0:9df942ea84f4 24 led2timeout.detach();
tmav123 0:9df942ea84f4 25 }
tmav123 0:9df942ea84f4 26 ///////////////////////////////////////////////////
tmav123 0:9df942ea84f4 27 void led3timeout_func()
tmav123 0:9df942ea84f4 28 {
tmav123 0:9df942ea84f4 29 led3 = 0;
tmav123 0:9df942ea84f4 30 led3timeout.detach();
tmav123 0:9df942ea84f4 31 }
tmav123 0:9df942ea84f4 32 ///////////////////////////////////////////////////
tmav123 0:9df942ea84f4 33 void pcRXtimeout_func() // function for transmiting the RF packets - empty the pcRX ring buffer
tmav123 0:9df942ea84f4 34 {
tmav123 0:9df942ea84f4 35 unsigned char txlength;
tmav123 0:9df942ea84f4 36
tmav123 0:9df942ea84f4 37 txlength = 0;
tmav123 0:9df942ea84f4 38 while(pcRX.use() > 0)
tmav123 0:9df942ea84f4 39 {
tmav123 0:9df942ea84f4 40 led2 = 1;
tmav123 0:9df942ea84f4 41 buffer[txlength] = pcRX.getc();
tmav123 0:9df942ea84f4 42 txlength++;
tmav123 0:9df942ea84f4 43 led2timeout.attach(&led2timeout_func, 0.050); // for switch off the led
tmav123 0:9df942ea84f4 44 }
tmav123 0:9df942ea84f4 45 if (txlength)
tmav123 0:9df942ea84f4 46 cc1101.SendPacket(buffer, txlength); // tx packet
tmav123 0:9df942ea84f4 47
tmav123 0:9df942ea84f4 48 pcRXtimeout.detach();
tmav123 0:9df942ea84f4 49 }
tmav123 0:9df942ea84f4 50 ///////////////////////////////////////////////////
tmav123 0:9df942ea84f4 51 void timer_func() // check the status of the CC1101 every 100ms
tmav123 0:9df942ea84f4 52 {
tmav123 0:9df942ea84f4 53 unsigned char chip_status_rx, chip_status_tx;
tmav123 0:9df942ea84f4 54
tmav123 0:9df942ea84f4 55 led1 = !led1;
tmav123 0:9df942ea84f4 56 chip_status_rx = cc1101.ReadChipStatusRX(); // check the rx status
tmav123 0:9df942ea84f4 57 if ((chip_status_rx & CHIP_STATE_MASK) == CHIP_STATE_RXFIFO_OVERFLOW) // if rx overflow flush the rx fifo
tmav123 0:9df942ea84f4 58 cc1101.FlushRX();
tmav123 0:9df942ea84f4 59 if ((chip_status_rx & CHIP_STATE_MASK) == CHIP_STATE_IDLE) // if state is idle go to rx state again
tmav123 0:9df942ea84f4 60 cc1101.RXMode();
tmav123 0:9df942ea84f4 61 chip_status_tx = cc1101.ReadChipStatusTX(); // check the tx sttus
tmav123 0:9df942ea84f4 62 if ((chip_status_tx & CHIP_STATE_MASK) == CHIP_STATE_TXFIFO_UNDERFLOW) // if tx underflow flush the tx fifo
tmav123 0:9df942ea84f4 63 cc1101.FlushTX();
tmav123 0:9df942ea84f4 64 }
tmav123 0:9df942ea84f4 65 ///////////////////////////////////////////////////
tmav123 0:9df942ea84f4 66 int main()
tmav123 0:9df942ea84f4 67 {
tmav123 0:9df942ea84f4 68 unsigned char rxlength, i;
tmav123 0:9df942ea84f4 69
tmav123 0:9df942ea84f4 70 pcRX.clear();
tmav123 0:9df942ea84f4 71 pcTX.clear();
tmav123 0:9df942ea84f4 72 cc1101.init();
tmav123 0:9df942ea84f4 73 timer.attach(&timer_func, 0.1);
tmav123 0:9df942ea84f4 74 while(1)
tmav123 0:9df942ea84f4 75 {
tmav123 0:9df942ea84f4 76 if(gdo0) // rx finished and CRC OK read the new packet
tmav123 0:9df942ea84f4 77 {
tmav123 0:9df942ea84f4 78 rxlength = sizeof(buffer);
tmav123 0:9df942ea84f4 79 if (cc1101.ReceivePacket(buffer, &rxlength) == 1) // read the rx packet
tmav123 0:9df942ea84f4 80 {
tmav123 0:9df942ea84f4 81 led3 = 1;
tmav123 0:9df942ea84f4 82 for (i = 0; i < rxlength; i++)
tmav123 0:9df942ea84f4 83 pcTX.putc(buffer[i]); // store the packet to the pcTX ring buffer
tmav123 0:9df942ea84f4 84 led3timeout.attach(&led3timeout_func, 0.050); // for switch off the led
tmav123 0:9df942ea84f4 85 }
tmav123 0:9df942ea84f4 86 }
tmav123 0:9df942ea84f4 87 if (pcTX.use() > 0) // check if we have data to transmit to pc
tmav123 0:9df942ea84f4 88 pc.putc(pcTX.getc()); // get the data from the ring buffer and transmit it to the pc
tmav123 0:9df942ea84f4 89 if (pc.readable()) // check if we received new data from the pc
tmav123 0:9df942ea84f4 90 {
tmav123 0:9df942ea84f4 91 pcRX.putc(pc.getc()); // put the data to the pcRX buffer and wait until 20ms passed till the last byte before tx the packet in RF
tmav123 0:9df942ea84f4 92 pcRXtimeout.attach(&pcRXtimeout_func, 0.020);
tmav123 0:9df942ea84f4 93 }
tmav123 0:9df942ea84f4 94 if (pcRX.use() > 20) // if more than 20 bytes received then tx the packet in RF
tmav123 0:9df942ea84f4 95 pcRXtimeout_func();
tmav123 0:9df942ea84f4 96 }
tmav123 0:9df942ea84f4 97 }
tmav123 0:9df942ea84f4 98 ///////////////////////////////////////////////////