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esp32_Adafruit_BusIO
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clean up ifdefs

This commit is contained in:
ladyada 2025-09-11 12:04:40 -04:00
parent e75ac29ca6
commit aa29b351d1
1 changed files with 27 additions and 46 deletions
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73
Adafruit_SPIDevice.cpp
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@ -2,6 +2,24 @@
// #define DEBUG_SERIAL Serial
#ifdef BUSIO_USE_FAST_PINIO
#define BUSIO_SET_CLOCK_LOW() (*clkPort = *clkPort & ~clkPinMask)
#define BUSIO_SET_CLOCK_HIGH() (*clkPort = *clkPort | clkPinMask)
#define BUSIO_READ_MISO() (*misoPort & misoPinMask)
#define BUSIO_WRITE_MOSI(value) do { \
if (value) \
*mosiPort = *mosiPort | mosiPinMask; \
else \
*mosiPort = *mosiPort & ~mosiPinMask; \
} while(0)
#else
#define BUSIO_SET_CLOCK_LOW() digitalWrite(_sck, LOW)
#define BUSIO_SET_CLOCK_HIGH() digitalWrite(_sck, HIGH)
#define BUSIO_READ_MISO() digitalRead(_miso)
#define BUSIO_WRITE_MOSI(value) digitalWrite(_mosi, value)
#endif
/*!
* @brief Create an SPI device with the given CS pin and settings
* @param cspin The arduino pin number to use for chip select
@ -181,77 +199,40 @@ void Adafruit_SPIDevice::transfer(uint8_t *buffer, size_t len) {
if (_dataMode == SPI_MODE0 || _dataMode == SPI_MODE2) {
towrite = send & b;
if ((_mosi != -1) && (lastmosi != towrite)) {
#ifdef BUSIO_USE_FAST_PINIO
if (towrite)
*mosiPort = *mosiPort | mosiPinMask;
else
*mosiPort = *mosiPort & ~mosiPinMask;
#else
digitalWrite(_mosi, towrite);
#endif
BUSIO_WRITE_MOSI(towrite);
lastmosi = towrite;
}
#ifdef BUSIO_USE_FAST_PINIO
*clkPort = *clkPort | clkPinMask; // Clock high
#else
digitalWrite(_sck, HIGH);
#endif
BUSIO_SET_CLOCK_HIGH();
if (bitdelay_us) {
delayMicroseconds(bitdelay_us);
}
if (_miso != -1) {
#ifdef BUSIO_USE_FAST_PINIO
if (*misoPort & misoPinMask) {
#else
if (digitalRead(_miso)) {
#endif
if (BUSIO_READ_MISO())
reply |= b;
}
}
#ifdef BUSIO_USE_FAST_PINIO
*clkPort = *clkPort & ~clkPinMask; // Clock low
#else
digitalWrite(_sck, LOW);
#endif
BUSIO_SET_CLOCK_LOW();
} else { // if (_dataMode == SPI_MODE1 || _dataMode == SPI_MODE3)
#ifdef BUSIO_USE_FAST_PINIO
*clkPort = *clkPort | clkPinMask; // Clock high
#else
digitalWrite(_sck, HIGH);
#endif
BUSIO_SET_CLOCK_HIGH();
if (bitdelay_us) {
delayMicroseconds(bitdelay_us);
}
if (_mosi != -1) {
#ifdef BUSIO_USE_FAST_PINIO
if (send & b)
*mosiPort = *mosiPort | mosiPinMask;
else
*mosiPort = *mosiPort & ~mosiPinMask;
#else
digitalWrite(_mosi, send & b);
#endif
BUSIO_WRITE_MOSI(send & b);
}
#ifdef BUSIO_USE_FAST_PINIO
*clkPort = *clkPort & ~clkPinMask; // Clock low
#else
digitalWrite(_sck, LOW);
#endif
BUSIO_SET_CLOCK_LOW();
if (_miso != -1) {
#ifdef BUSIO_USE_FAST_PINIO
if (*misoPort & misoPinMask) {
#else
if (digitalRead(_miso)) {
#endif
if (BUSIO_READ_MISO()) {
reply |= b;
}
}