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https://github.com/RIOT-OS/RIOT.git
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29cb64a37e
* added TX functions to cc110x_ng driver and transceiver module * split up cc1100_ng functions to more files * added address asignment and request functions to driver and transceiver module
78 lines
2.0 KiB
C
78 lines
2.0 KiB
C
#include <stdio.h>
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#include <cc1100_ng.h>
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#include <cc1100-defaultSettings.h>
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#include <cc1100-internal.h>
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#include <cc1100-arch.h>
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#include <cc1100_spi.h>
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#include <irq.h>
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#include <board.h>
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uint8_t cc1100_send(cc1100_packet_t *packet) {
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puts("Going to send\n");
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volatile uint32_t abort_count;
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uint8_t size;
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/* TODO: burst sending */
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radio_state = RADIO_SEND_BURST;
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rflags.LL_ACK = 0;
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/*
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* Number of bytes to send is:
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* length of phy payload (packet->length)
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* + size of length field (1 byte)
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*/
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size = packet->length + 1;
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// The number of bytes to be transmitted must be smaller
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// or equal to PACKET_LENGTH (62 bytes). So the receiver
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// can put the whole packet in its RX-FIFO (with appended
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// packet status bytes).
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if (size > PACKET_LENGTH) {
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return 0;
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}
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packet->phy_src = cc1100_get_address();
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// Disables RX interrupt etc.
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cc1100_before_send();
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// But CC1100 in IDLE mode to flush the FIFO
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cc1100_spi_strobe(CC1100_SIDLE);
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// Flush TX FIFO to be sure it is empty
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cc1100_spi_strobe(CC1100_SFTX);
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// Write packet into TX FIFO
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cc1100_spi_writeburst_reg(CC1100_TXFIFO, (char*) packet, size);
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// Switch to TX mode
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abort_count = 0;
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unsigned int cpsr = disableIRQ();
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cc1100_spi_strobe(CC1100_STX);
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// Wait for GDO2 to be set -> sync word transmitted
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while (cc1100_get_gdo2() == 0) {
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abort_count++;
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if (abort_count > CC1100_SYNC_WORD_TX_TIME) {
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// Abort waiting. CC1100 maybe in wrong mode
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// e.g. sending preambles for always
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puts("[CC1100 TX] fatal error\n");
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break;
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}
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}
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restoreIRQ(cpsr);
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// Wait for GDO2 to be cleared -> end of packet
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while (cc1100_get_gdo2() != 0);
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// Experimental - TOF Measurement
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cc1100_after_send();
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cc1100_statistic.raw_packets_out++;
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// Store number of transmission retries
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rflags.TX = 0;
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// Go to mode after TX (CONST_RX -> RX, WOR -> WOR)
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cc1100_switch_to_rx();
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return true;
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}
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