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BitBangedSPI::begin(): initialize levels of SCK and MOSI. Correct indentation.

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This commit is contained in:
Peter Van Hoyweghen 2015-07-28 22:31:34 +02:00
parent 8d95899450
commit d271c1c8a2
1 changed files with 28 additions and 29 deletions
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57
build/shared/examples/11.ArduinoISP/ArduinoISP/ArduinoISP.ino
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@ -135,38 +135,37 @@ friend class BitBangedSPI;
};
class BitBangedSPI {
public:
public:
void begin() {
digitalWrite(SCK, LOW);
digitalWrite(MOSI, LOW);
pinMode(SCK, OUTPUT);
pinMode(MOSI, OUTPUT);
pinMode(MISO, INPUT);
}
void beginTransaction(SPISettings settings) {
pulseWidth = 1000 / (settings.clock / 1000);
if (pulseWidth == 0)
pulseWidth = 1;
void beginTransaction(SPISettings settings) {
pulseWidth = 1000 / (settings.clock / 1000);
if (pulseWidth == 0)
pulseWidth = 1;
}
void end() {}
uint8_t transfer (uint8_t b) {
for (unsigned int i = 0; i < 8; ++i) {
digitalWrite(MOSI, b & 0x80);
digitalWrite(SCK, HIGH);
delayMicroseconds(pulseWidth);
b = (b << 1) | digitalRead(MISO);
digitalWrite(SCK, LOW); // slow pulse
delayMicroseconds(pulseWidth);
}
return b;
}
void begin() {
pinMode(MISO, INPUT);
pinMode(RESET, OUTPUT);
pinMode(SCK, OUTPUT);
pinMode(MOSI, OUTPUT);
}
void end() {}
uint8_t transfer (uint8_t b) {
for (unsigned int i = 0; i < 8; ++i) {
digitalWrite(MOSI, b & 0x80);
digitalWrite(SCK, HIGH);
delayMicroseconds(pulseWidth);
b = (b << 1) | digitalRead(MISO);
digitalWrite(SCK, LOW); // slow pulse
delayMicroseconds(pulseWidth);
}
return b;
}
private:
unsigned long pulseWidth; // in microseconds
private:
unsigned long pulseWidth; // in microseconds
};
static BitBangedSPI SPI;