Improvement batch.
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nvt-se
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b13e9dde90
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@ -106,7 +106,7 @@ const u8_t cc1020_config_19200[41] = {
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0x0F, // 0x01, INTERFACE
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0xFF, // 0x02, RESET
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0x8F, // 0x03, SEQUENCING
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//869.525 bei 50kHz
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// 869.525 at 50kHz
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0x3A, // 0x04, FREQ_2A
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0x32, // 0x05, FREQ_1A
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0x97, // 0x06, FREQ_0A // 19200
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@ -152,7 +152,7 @@ const u8_t cc1020_config_115200[41] = {
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0x0F, // 0x01, INTERFACE
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0xFF, // 0x02, RESET
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0x8F, // 0x03, SEQUENCING
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// 869.525 bei 200kHz
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// 869.525 at 200kHz
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0x3A, // 0x04, FREQ_2A
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0x32, // 0x05, FREQ_1A
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0x97, // 0x06, FREQ_0A // 19200
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@ -204,17 +204,21 @@ enum cc1020_state {
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* @name Packet specification
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* @{
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*/
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#define PREAMBLESIZE 6 // number of bytes in preamble
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#define PREAMBLE 0xAA
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#define SYNCWDSIZE 2 // number of bytes in syncword
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const u8_t syncword[2] = {0xD3,0x91};
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#define HDRSIZE 1 // number of bytes in header
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#define TAILSIZE 2 // number of bytes in tail
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#define TAIL 0xFA
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__attribute__((packed))
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struct cc1020_header {
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u8_t length; // header: number of bytes in packet (incl. header)
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u8_t length; // header: number of bytes in packet including header
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};
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#define PREAMBLESIZE 6
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#define PREAMBLE 0xAA
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#define TAILSIZE 2
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#define TAIL 0xFA
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#define SYNCWDSIZE (sizeof (syncword))
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#define HDRSIZE (sizeof (struct cc1020_header))
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///@}
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/// cc1020 receiver state
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@ -84,7 +84,7 @@ static enum cc1020_rxstate cc1020_rxstate = CC1020_RX_SEARCHING;
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static unsigned short cc1020_rxlen = 0;
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/// received signal strength indicator reading for last received packet
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static unsigned char rssi;
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static volatile unsigned char rssi;
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/// callback when a packet has been received
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static unsigned char cc1020_pa_power = PA_POWER;
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@ -109,7 +109,6 @@ void
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cc1020_init(const u8_t *config)
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{
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cc1020_event = process_alloc_event();
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printf("cc1020_event = %d\n", cc1020_event);
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cc1020_setupPD();
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cc1020_reset();
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@ -138,7 +137,6 @@ int
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cc1020_on(void)
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{
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if (cc1020_power_mode == CC1020_ALWAYS_ON) {
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// Switch to receive mode
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cc1020_set_rx();
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} else {
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@ -152,6 +150,7 @@ cc1020_off(void)
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{
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if (cc1020_rxstate == CC1020_OFF)
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return;
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LNA_POWER_OFF(); // power down lna
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_DINT();
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cc1020_rxstate = CC1020_OFF;
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@ -175,7 +174,7 @@ cc1020_set_rx(void)
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UCTL0 |= CHAR | SYNC; // 8-bit character, SPI, Slave mode
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// CKPH works also, but not CKPH+CKPL or none of them!!
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UTCTL0 = CKPL + STC;
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UTCTL0 = CKPL | STC;
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URCTL0 = 0x00;
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UBR00 = 0x00; // No baudrate divider
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UBR10 = 0x00; // settings for a spi
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@ -202,7 +201,6 @@ cc1020_set_rx(void)
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void
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cc1020_set_tx(void)
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{
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// configure radio rx
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LNA_POWER_OFF(); // power down LNA
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_DINT();
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@ -224,17 +222,16 @@ cc1020_set_tx(void)
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void
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cc1020_set_receiver(void (*recv)(void))
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{
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printf("cc1020_set_receiver\n");
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receiver_callback = recv;
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}
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__inline void
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void
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cc1020_set_power_mode(enum cc1020_power_mode mode)
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{
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cc1020_power_mode = mode;
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}
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__inline void
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void
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cc1020_set_power(u8_t pa_power)
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{
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cc1020_pa_power = pa_power;
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@ -260,7 +257,7 @@ cc1020_read(u8_t *buf, unsigned int bufsize)
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return 0;
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}
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__inline u8_t
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u8_t
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cc1020_get_rssi(void)
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{
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return rssi;
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@ -276,8 +273,7 @@ cc1020_send(u8_t *buf, unsigned int len)
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if (cc1020_txlen > 0)
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return 0;
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// prefix
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// (preamble+syncword are already in buffer)
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/* The preamble and the sync word are already in buffer. */
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cc1020_txlen = PREAMBLESIZE + SYNCWDSIZE;
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// header
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@ -288,8 +284,8 @@ cc1020_send(u8_t *buf, unsigned int len)
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cc1020_txlen += len;
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// suffix
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cc1020_txbuf[cc1020_txlen++] = 0xFA;
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cc1020_txbuf[cc1020_txlen++] = 0xFA;
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cc1020_txbuf[cc1020_txlen++] = TAIL;
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cc1020_txbuf[cc1020_txlen++] = TAIL;
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process_poll(&cc1020_sender_process);
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@ -318,7 +314,6 @@ interrupt(UART0RX_VECTOR) cc1020_rxhandler(void)
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shiftbuf.b2 = shiftbuf.b3;
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shiftbuf.b3 = shiftbuf.b4;
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shiftbuf.b4 = RXBUF0;
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if (shiftbuf.i1 == 0xAAD3 && shiftbuf.i2 == 0x9100) {
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// 0 AA D3 91 00 | FF 00 |
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syncbs = 0;
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@ -348,9 +343,10 @@ interrupt(UART0RX_VECTOR) cc1020_rxhandler(void)
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return;
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}
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cc1020_rxstate = CC1020_RX_RECEIVE;
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// Signal "Channel busy"
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// Update RSSI.
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rssi = cc1020_read_reg(CC1020_RSS);
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cc1020_rxstate = CC1020_RX_RECEIVE;
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break;
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case CC1020_RX_RECEIVE:
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if (syncbs == 0) {
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@ -374,7 +370,6 @@ interrupt(UART0RX_VECTOR) cc1020_rxhandler(void)
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// disable receiver
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DISABLE_RX_IRQ();
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cc1020_rxstate = CC1020_RX_PROCESSING;
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printf("read %u bytes.\n", cc1020_rxlen);
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// call receiver to copy from buffer
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if (receiver_callback != NULL)
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@ -60,13 +60,13 @@ extern const u8_t cc1020_config_115200[];
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void cc1020_init(const u8_t* config);
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int cc1020_on();
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int cc1020_on(void);
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void cc1020_set_rx();
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void cc1020_set_rx(void);
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void cc1020_set_tx();
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void cc1020_set_tx(void);
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void cc1020_off();
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void cc1020_off(void);
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void cc1020_set_receiver(void (*recv)(void));
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@ -86,7 +86,7 @@ unsigned int cc1020_read(u8_t *buf, unsigned int bufsize);
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*
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* Best to call in packet handler
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*/
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u8_t cc1020_get_rssi();
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u8_t cc1020_get_rssi(void);
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unsigned int cc1020_send(u8_t *buf, unsigned int bufsize);
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@ -69,7 +69,7 @@ interrupt(DACDMA_VECTOR) irq_dacdma(void)
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}
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void
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dma_transfer(char *buf, unsigned len)
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dma_transfer(unsigned char *buf, unsigned len)
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{
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// Configure DMA Channel 0 for UART0 TXIFG.
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DMACTL0 = DMA0TSEL_4;
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@ -28,12 +28,12 @@
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*
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* This file is part of the Contiki operating system.
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*
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* $Id: dma.h,v 1.2 2007/06/28 14:41:17 nvt-se Exp $
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* $Id: dma.h,v 1.3 2007/07/05 08:35:13 nvt-se Exp $
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*/
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#ifndef DMA_H
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#define DMA_H
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void dma_transfer(char *, unsigned);
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void dma_transfer(unsigned char *, unsigned);
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#endif
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