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atusb/fw/mac.c (handle_irq): move frame reception to separate function

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This commit is contained in:
Werner Almesberger 2013-04-01 14:29:57 -03:00
parent 60ee82ba93
commit d76bdf6a82
1 changed files with 25 additions and 17 deletions
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42
atusb/fw/mac.c
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@ -64,10 +64,33 @@ static void rx_done(void *user)
}
static void receive_frame(void)
{
uint8_t size, i;
spi_begin();
if (!(spi_io(AT86RF230_BUF_READ) & RX_CRC_VALID)) {
spi_end();
return;
}
size = spi_recv();
if (!size || (size & 0x80)) {
spi_end();
return;
}
rx_buf[0] = size;
for (i = 0; i != size+1; i++)
rx_buf[i+1] = spi_recv();
spi_end();
led(1);
usb_send(&eps[1], rx_buf, size+2, rx_done, NULL);
}
static bool handle_irq(void)
{
uint8_t irq;
uint8_t size, i;
irq = reg_read(REG_IRQ_STATUS);
if (!(irq & IRQ_TRX_END))
@ -89,23 +112,8 @@ static bool handle_irq(void)
if (eps[1].state != EP_IDLE)
return 1;
spi_begin();
if (!(spi_io(AT86RF230_BUF_READ) & RX_CRC_VALID)) {
spi_end();
return 1;
}
size = spi_recv();
if (!size || (size & 0x80)) {
spi_end();
return 1;
}
receive_frame();
rx_buf[0] = size;
for (i = 0; i != size+1; i++)
rx_buf[i+1] = spi_recv();
spi_end();
led(1);
usb_send(&eps[1], rx_buf, size+2, rx_done, NULL);
return 1;
}