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atusb/fw/mac.c (next_buf): dedicated function for incrementing buffer indices
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@ -29,7 +29,6 @@ bool (*mac_irq)(void) = NULL;
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static uint8_t rx_buf[RX_BUFS][MAX_PSDU+2]; /* PHDR+payload+LQ */
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static bool rx_in = 0, rx_out = 0;
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static uint8_t tx_buf[MAX_PSDU];
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static uint8_t tx_size = 0;
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static bool txing = 0;
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@ -37,6 +36,18 @@ static bool queued_tx_ack = 0;
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static uint8_t next_seq, this_seq, queued_seq;
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/* ----- Receive buffer management ----------------------------------------- */
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static uint8_t rx_in = 0, rx_out = 0;
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static inline void next_buf(uint8_t *index)
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{
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*index = (*index+1) % RX_BUFS;
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}
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/* ----- Register access --------------------------------------------------- */
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@ -95,7 +106,7 @@ static void tx_ack_done(void *user)
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static void rx_done(void *user)
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{
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led(0);
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rx_out = (rx_out+1) & (RX_BUFS-1);
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next_buf(&rx_out);
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usb_next();
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}
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@ -122,7 +133,7 @@ static void receive_frame(void)
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spi_end();
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buf[0] = size;
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rx_in = (rx_in+1) & (RX_BUFS-1);
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next_buf(&rx_in);
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if (eps[1].state == EP_IDLE)
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usb_next();
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