/*
* Previous AVR versions read the full PIN register. Now each input
* and output pin is freely configurable (within a single port bank).
* This routine collects all pins as they would have been read
* from a single 8-bit register.
*/
static int PortStatus(void)
{
int stat = 0;
#ifdef INBANK
#ifdef INPIN1
stat |= GpioPinGet(INBANK, INPIN1);
#endif
#ifdef INPIN2
stat |= GpioPinGet(INBANK, INPIN2) << 1;
#endif
#ifdef INPIN3
stat |= GpioPinGet(INBANK, INPIN3) << 2;
#endif
#ifdef INPIN4
stat |= GpioPinGet(INBANK, INPIN4) << 3;
#endif
#endif /* INBANK */
#ifdef OUTBANK
#ifdef OUTPIN1
stat |= GpioPinGet(OUTBANK, OUTPIN1) << 4;
#endif
#ifdef OUTPIN2
stat |= GpioPinGet(OUTBANK, OUTPIN2) << 5;
#endif
#ifdef OUTPIN3
stat |= GpioPinGet(OUTBANK, OUTPIN3) << 6;
#endif
#ifdef OUTPIN4
stat |= GpioPinGet(OUTBANK, OUTPIN4) << 7;
#endif
#endif /* OUTBANK */
return stat;
}
uint8_t IoGetConfig(void)
{
uint8_t io = 0;
if(GpioPinGet(AVRPORTF,IO_CONFIG0)) {
io |= (1<<0);
}
#ifdef SWAP_CONFIG_PIN2_MODE
if(!GpioPinGet(AVRPORTF,IO_CONFIG1)) {
io |= (1<<1);
}
#else
if(GpioPinGet(AVRPORTF,IO_CONFIG1)) {
io |= (1<<1);
}
#endif
gconfig = io;
return io;
}
/* Idle clock is high and data is captured on the rising edge. */
static void SpiMode3Transfer(GSPIREG *gspi, CONST uint8_t *txbuf, uint8_t *rxbuf, int xlen)
{
#if defined(SBBI0_SCK_BIT)
uint_fast8_t mask;
while (xlen--) {
for (mask = 0x80; mask; mask >>= 1) {
NutMicroDelay(gspi->gspi_dly_rate);
GpioPinSetLow(SBBI0_SCK_PORT, SBBI0_SCK_BIT);
#if defined(SBBI0_MOSI_BIT)
if (txbuf) {
GpioPinSet(SBBI0_MOSI_PORT, SBBI0_MOSI_BIT, (*txbuf & mask) != 0);
}
#endif /* SBBI0_MOSI_BIT */
NutMicroDelay(gspi->gspi_dly_rate);
GpioPinSetHigh(SBBI0_SCK_PORT, SBBI0_SCK_BIT);
#if defined(SBBI0_MISO_BIT)
if (rxbuf) {
if (GpioPinGet(SBBI0_MISO_PORT, SBBI0_MISO_BIT)) {
*rxbuf |= mask;
}
else {
*rxbuf &= ~mask;
}
}
#endif /* SBBI0_MISO_BIT */
}
if (txbuf) {
txbuf++;
}
if (rxbuf) {
rxbuf++;
}
}
#endif /* SBBI0_SCK_BIT */
}
/*!
* \brief Check if codec 0 is ready.
*
* \return 0 if not.
*/
static int VsCodec0IsReady(void)
{
return GpioPinGet(VSCODEC0_DREQ_PORT, VSCODEC0_DREQ_BIT) != 0;
}