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Merge pull request #288 from DCC-EX:debug-ex-io-expander-on-mega

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Debug-ex-io-expander-on-mega
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peteGSX 2023-01-10 20:11:45 +10:00 committed by GitHub
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1 changed files with 7 additions and 10 deletions
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17
IO_EXIOExpander.h
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@ -66,19 +66,18 @@ private:
_i2cAddress = i2cAddress; _i2cAddress = i2cAddress;
_numDigitalPins = numDigitalPins; _numDigitalPins = numDigitalPins;
_numAnaloguePins = numAnaloguePins; _numAnaloguePins = numAnaloguePins;
int _dPinArrayLen = (_numDigitalPins + 7) / 8;
addDevice(this); addDevice(this);
} }
void _begin() { void _begin() {
// Initialise EX-IOExander device // Initialise EX-IOExander device
uint8_t _check = I2CManager.checkAddress(_i2cAddress); I2CManager.begin();
if (I2CManager.exists(_i2cAddress)) { if (I2CManager.exists(_i2cAddress)) {
_digitalOutBuffer[0] = EXIOINIT; _digitalOutBuffer[0] = EXIOINIT;
_digitalOutBuffer[1] = _numDigitalPins; _digitalOutBuffer[1] = _numDigitalPins;
_digitalOutBuffer[2] = _numAnaloguePins; _digitalOutBuffer[2] = _numAnaloguePins;
// Send config, if EXIORDY returned, we're good, otherwise go offline // Send config, if EXIORDY returned, we're good, otherwise go offline
I2CManager.read(_i2cAddress, _digitalInBuffer, 1, _digitalOutBuffer, 3, &_i2crb); I2CManager.read(_i2cAddress, _digitalInBuffer, 1, _digitalOutBuffer, 3);
if (_digitalInBuffer[0] != EXIORDY) { if (_digitalInBuffer[0] != EXIORDY) {
DIAG(F("ERROR configuring EX-IOExpander device, I2C:x%x"), _i2cAddress); DIAG(F("ERROR configuring EX-IOExpander device, I2C:x%x"), _i2cAddress);
_deviceState = DEVSTATE_FAILED; _deviceState = DEVSTATE_FAILED;
@ -87,7 +86,7 @@ private:
// Attempt to get version, if we don't get it, we don't care, don't go offline // Attempt to get version, if we don't get it, we don't care, don't go offline
// Using digital in buffer in reverse to save RAM // Using digital in buffer in reverse to save RAM
_digitalInBuffer[0] = EXIOVER; _digitalInBuffer[0] = EXIOVER;
I2CManager.read(_i2cAddress, _versionBuffer, 3, _digitalInBuffer, 1, &_i2crb); I2CManager.read(_i2cAddress, _versionBuffer, 3, _digitalInBuffer, 1);
_majorVer = _versionBuffer[0]; _majorVer = _versionBuffer[0];
_minorVer = _versionBuffer[1]; _minorVer = _versionBuffer[1];
_patchVer = _versionBuffer[2]; _patchVer = _versionBuffer[2];
@ -105,11 +104,10 @@ private:
if (paramCount != 1) return false; if (paramCount != 1) return false;
bool pullup = params[0]; bool pullup = params[0];
int pin = vpin - _firstVpin; int pin = vpin - _firstVpin;
uint8_t mask = 1 << ((pin-_firstVpin) % 8);
_digitalOutBuffer[0] = EXIODPUP; _digitalOutBuffer[0] = EXIODPUP;
_digitalOutBuffer[1] = pin; _digitalOutBuffer[1] = pin;
_digitalOutBuffer[2] = pullup; _digitalOutBuffer[2] = pullup;
I2CManager.write(_i2cAddress, _digitalOutBuffer, 3, &_i2crb); I2CManager.write(_i2cAddress, _digitalOutBuffer, 3);
return true; return true;
} }
@ -117,7 +115,7 @@ private:
int pin = vpin - _firstVpin; int pin = vpin - _firstVpin;
_analogueOutBuffer[0] = EXIORDAN; _analogueOutBuffer[0] = EXIORDAN;
_analogueOutBuffer[1] = pin; _analogueOutBuffer[1] = pin;
I2CManager.read(_i2cAddress, _analogueInBuffer, 2, _analogueOutBuffer, 2, &_i2crb); I2CManager.read(_i2cAddress, _analogueInBuffer, 2, _analogueOutBuffer, 2);
return (_analogueInBuffer[1] << 8) + _analogueInBuffer[0]; return (_analogueInBuffer[1] << 8) + _analogueInBuffer[0];
} }
@ -126,7 +124,7 @@ private:
_digitalOutBuffer[0] = EXIORDD; _digitalOutBuffer[0] = EXIORDD;
_digitalOutBuffer[1] = pin; _digitalOutBuffer[1] = pin;
_digitalOutBuffer[2] = 0x00; // Don't need to use this for reading _digitalOutBuffer[2] = 0x00; // Don't need to use this for reading
I2CManager.read(_i2cAddress, _digitalInBuffer, 1, _digitalOutBuffer, 3, &_i2crb); I2CManager.read(_i2cAddress, _digitalInBuffer, 1, _digitalOutBuffer, 3);
return _digitalInBuffer[0]; return _digitalInBuffer[0];
} }
@ -135,7 +133,7 @@ private:
_digitalOutBuffer[0] = EXIOWRD; _digitalOutBuffer[0] = EXIOWRD;
_digitalOutBuffer[1] = pin; _digitalOutBuffer[1] = pin;
_digitalOutBuffer[2] = value; _digitalOutBuffer[2] = value;
I2CManager.write(_i2cAddress, _digitalOutBuffer, 3, &_i2crb); I2CManager.write(_i2cAddress, _digitalOutBuffer, 3);
} }
void _display() override { void _display() override {
@ -167,7 +165,6 @@ private:
uint8_t _majorVer = 0; uint8_t _majorVer = 0;
uint8_t _minorVer = 0; uint8_t _minorVer = 0;
uint8_t _patchVer = 0; uint8_t _patchVer = 0;
I2CRB _i2crb;
enum { enum {
EXIOINIT = 0xE0, // Flag to initialise setup procedure EXIOINIT = 0xE0, // Flag to initialise setup procedure