fixed bug with uart DMA
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6864494646
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801a7e1149
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@ -26,7 +26,7 @@
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)$Id: uart1.c,v 1.23 2011/01/18 16:07:16 adamdunkels Exp $
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* @(#)$Id: uart1.c,v 1.24 2011/01/19 20:44:20 joxe Exp $
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*/
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/*
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@ -77,23 +77,24 @@ static uint8_t txbuf_data[TXBUFSIZE];
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#define RXBUFSIZE 128
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static uint8_t rxbuf[RXBUFSIZE];
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static uint8_t last_size;
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static uint16_t last_size;
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static struct ctimer rxdma_timer;
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static void
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handle_rxdma_timer(void *ptr)
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{
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uint8_t size;
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uint16_t size;
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size = DMA0SZ; /* Note: loop requires that size is less or eq to RXBUFSIZE */
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for(;last_size != size; last_size--) {
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if(last_size == 0) last_size = RXBUFSIZE;
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/* printf("read: %c\n", (unsigned char)rxbuf[RXBUFSIZE - last_size]); */
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while(last_size != size) {
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/* printf("read: %c [%d,%d]\n", (unsigned char)rxbuf[RXBUFSIZE - last_size], */
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/* last_size, size); */
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uart1_input_handler((unsigned char)rxbuf[RXBUFSIZE - last_size]);
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last_size--;
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if(last_size == 0) last_size = RXBUFSIZE;
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}
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ctimer_reset(&rxdma_timer);
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}
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#endif /* RX_WITH_DMA */
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/*---------------------------------------------------------------------------*/
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@ -107,7 +108,7 @@ void
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uart1_set_input(int (*input)(unsigned char c))
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{
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#if RX_WITH_DMA /* This needs to be called after ctimer process is started */
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ctimer_set(&rxdma_timer, CLOCK_SECOND/32, handle_rxdma_timer, NULL);
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ctimer_set(&rxdma_timer, CLOCK_SECOND/64, handle_rxdma_timer, NULL);
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#endif
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uart1_input_handler = input;
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}
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@ -246,6 +247,7 @@ uart1_init(unsigned long ubr)
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/*---------------------------------------------------------------------------*/
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#if !RX_WITH_DMA
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interrupt(UART1RX_VECTOR)
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uart1_rx_interrupt(void)
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{
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@ -275,6 +277,7 @@ uart1_rx_interrupt(void)
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ENERGEST_OFF(ENERGEST_TYPE_IRQ);
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}
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#endif /* !RX_WITH_DMA */
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/*---------------------------------------------------------------------------*/
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#if TX_WITH_INTERRUPT
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interrupt(UART1TX_VECTOR)
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