156 lines
3.6 KiB
C
156 lines
3.6 KiB
C
/**
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* \file
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* CC2430 RF driver
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* \author
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* Zach Shelby <zach@sensinode.com>
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*
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* Non-bankable code for cc2430 rf driver.
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* Interrupt routine and code called through function pointers
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* must be placed into the HOME bank.
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*
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*/
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#include <stdio.h>
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#include "contiki.h"
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#include "dev/radio.h"
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#include "dev/cc2430_rf.h"
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#include "cc2430_sfr.h"
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#ifdef RF_LED_ENABLE
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#include "dev/leds.h"
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#endif
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#include "sys/clock.h"
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#include "net/rime/packetbuf.h"
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#include "net/rime/rimestats.h"
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#define DEBUG 1
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#if DEBUG
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#define PRINTF(...) printf(__VA_ARGS__)
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#else
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#define PRINTF(...) do {} while (0)
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#endif
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#ifdef RF_LED_ENABLE
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#define RF_RX_LED_ON() leds_on(LEDS_RED);
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#define RF_RX_LED_OFF() leds_off(LEDS_RED);
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#define RF_TX_LED_ON() leds_on(LEDS_GREEN);
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#define RF_TX_LED_OFF() leds_off(LEDS_GREEN);
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#else
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#define RF_RX_LED_ON()
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#define RF_RX_LED_OFF()
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#define RF_TX_LED_ON()
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#define RF_TX_LED_OFF()
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#endif
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#ifdef HAVE_RF_ERROR
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uint8_t rf_error = 0;
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#endif
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/*---------------------------------------------------------------------------*/
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PROCESS(cc2430_rf_process, "CC2430 RF driver");
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/*---------------------------------------------------------------------------*/
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/**
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* RF interrupt service routine.
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*
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*/
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void
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cc2430_rf_ISR( void ) __interrupt (RF_VECTOR)
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{
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EA = 0;
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if(RFIF & IRQ_TXDONE) {
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RF_TX_LED_OFF();
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RFIF &= ~IRQ_TXDONE;
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cc2430_rf_command(ISFLUSHTX);
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}
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if(RFIF & IRQ_FIFOP) {
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if(RFSTATUS & FIFO) {
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RF_RX_LED_ON();
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/* Poll the RF process which calls cc2430_rf_read() */
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process_poll(&cc2430_rf_process);
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} else {
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cc2430_rf_command(ISFLUSHRX);
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cc2430_rf_command(ISFLUSHRX);
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RFIF &= ~IRQ_FIFOP;
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}
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}
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S1CON &= ~(RFIF_0 | RFIF_1);
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EA = 1;
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}
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/*---------------------------------------------------------------------------*/
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/**
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* RF error interrupt service routine.
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*
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*/
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void
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cc2430_rf_error_ISR( void ) __interrupt (RFERR_VECTOR)
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{
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EA = 0;
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TCON_RFERRIF = 0;
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#ifdef HAVE_RF_ERROR
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rf_error = 254;
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#endif
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cc2430_rf_command(ISRFOFF);
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cc2430_rf_command(ISFLUSHRX);
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cc2430_rf_command(ISFLUSHRX);
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cc2430_rf_command(ISRXON);
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RF_RX_LED_OFF();
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RF_TX_LED_OFF();
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EA = 1;
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}
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void (* receiver_callback)(const struct radio_driver *);
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void
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cc2430_rf_set_receiver(void (* recv)(const struct radio_driver *))
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{
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receiver_callback = recv;
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}
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/*---------------------------------------------------------------------------*/
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/*
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* non-banked functions called through function pointers then call banked code
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*/
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int
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cc2430_rf_off(void)
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{
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return cc2430_rf_rx_disable();
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}
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/*---------------------------------------------------------------------------*/
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int
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cc2430_rf_on(void)
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{
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return cc2430_rf_rx_enable();
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}
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/*---------------------------------------------------------------------------*/
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int
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cc2430_rf_send(void *payload, unsigned short payload_len)
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{
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return cc2430_rf_send_b(payload, payload_len);
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}
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/*---------------------------------------------------------------------------*/
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int
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cc2430_rf_read(void *buf, unsigned short bufsize)
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{
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return cc2430_rf_read_banked(buf, bufsize);
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}
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/*---------------------------------------------------------------------------*/
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/*---------------------------------------------------------------------------*/
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PROCESS_THREAD(cc2430_rf_process, ev, data)
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{
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PROCESS_BEGIN();
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while(1) {
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PROCESS_YIELD_UNTIL(ev == PROCESS_EVENT_POLL);
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if(receiver_callback != NULL) {
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PRINTF("cc2430_rf_process: calling receiver callback\n");
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receiver_callback(&cc2430_rf_driver);
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} else {
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PRINTF("cc2430_rf_process: no receiver callback\n");
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cc2430_rf_command(ISFLUSHRX);
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}
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}
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PROCESS_END();
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}
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