Merge pull request #74 from malvira/maca-dummy-rx
Receive packets in a dummy_rx when the maca packet pool is
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commit
326781ef43
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@ -96,6 +96,7 @@ volatile packet_t *rx_head, *tx_head;
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/* used for ack recpetion if the packet_pool goes empty */
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/* doesn't go back into the pool when freed */
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static volatile packet_t dummy_ack;
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static volatile packet_t dummy_rx;
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/* incremented on every maca entry */
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/* you can use this to detect that the receive loop is still running */
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@ -359,6 +360,7 @@ void post_receive(void) {
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dma_rx = get_free_packet();
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if (dma_rx == 0) {
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PRINTF("trying to fill MACA_DMARX in post_receieve but out of packet buffers\n\r");
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dma_rx = &dummy_rx;
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/* set the sftclock so that we return to the maca_isr */
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*MACA_SFTCLK = *MACA_CLK + RECV_SOFTIMEOUT; /* soft timeout */
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*MACA_TMREN = (1 << maca_tmren_sft);
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@ -652,21 +654,25 @@ void maca_isr(void) {
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if (data_indication_irq()) {
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*MACA_CLRIRQ = (1 << maca_irq_di);
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dma_rx->length = *MACA_GETRXLVL - 2; /* packet length does not include FCS */
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dma_rx->lqi = get_lqi();
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dma_rx->rx_time = *MACA_TIMESTAMP;
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/* check if received packet needs an ack */
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if(prm_mode == AUTOACK && (dma_rx->data[1] & MAC_ACK_REQUEST_FLAG)) {
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/* this wait is necessary to auto-ack */
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volatile uint32_t wait_clk;
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wait_clk = *MACA_CLK + 200;
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while(*MACA_CLK < wait_clk) { continue; }
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if (dma_rx != &dummy_ack && dma_rx != &dummy_rx)
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{
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dma_rx->length = *MACA_GETRXLVL - 2; /* packet length does not include FCS */
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dma_rx->lqi = get_lqi();
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dma_rx->rx_time = *MACA_TIMESTAMP;
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/* check if received packet needs an ack */
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if(prm_mode == AUTOACK && (dma_rx->data[1] & 0x20)) {
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/* this wait is necessary to auto-ack */
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volatile uint32_t wait_clk;
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wait_clk = *MACA_CLK + 200;
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while(*MACA_CLK < wait_clk) { continue; }
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}
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if(maca_rx_callback != 0) { maca_rx_callback(dma_rx); }
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add_to_rx(dma_rx);
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}
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if(maca_rx_callback != 0) { maca_rx_callback(dma_rx); }
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add_to_rx(dma_rx);
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dma_rx = 0;
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}
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if (filter_failed_irq()) {
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