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@ -24,10 +24,8 @@
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#include <Arduino.h>
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#include "Model100Side.h"
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extern "C" {
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#include "kaleidoscope/device/keyboardio/twi.h"
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}
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#include <Wire.h>
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#include <utility/twi.h>
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#include "kaleidoscope/driver/color/GammaCorrection.h"
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@ -43,9 +41,7 @@ uint8_t twi_uninitialized = 1;
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Model100Side::Model100Side(byte setAd01) {
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ad01 = setAd01;
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addr = SCANNER_I2C_ADDR_BASE | ad01;
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if (twi_uninitialized--) {
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twi_init();
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}
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markDeviceUnavailable();
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}
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// Returns the relative controller addresss. The expected range is 0-3
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@ -72,8 +68,7 @@ uint8_t Model100Side::controllerAddress() {
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// https://www.arduino.cc/en/Reference/WireEndTransmission
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byte Model100Side::setKeyscanInterval(byte delay) {
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uint8_t data[] = {TWI_CMD_KEYSCAN_INTERVAL, delay};
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uint8_t result = twi_writeTo(addr, data, ELEMENTS(data), 1, 0);
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uint8_t result = writeData(data, ELEMENTS(data));
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return result;
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}
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@ -103,34 +98,84 @@ int Model100Side::readLEDSPIFrequency() {
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// https://www.arduino.cc/en/Reference/WireEndTransmission
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byte Model100Side::setLEDSPIFrequency(byte frequency) {
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uint8_t data[] = {TWI_CMD_LED_SPI_FREQUENCY, frequency};
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uint8_t result = twi_writeTo(addr, data, ELEMENTS(data), 1, 0);
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uint8_t result = writeData(data, ELEMENTS(data));
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return result;
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}
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// GD32 I2C implements timeouts which will cause a stall when a device does not answer.
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// This method will verify that the device is around and ready to talk.
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bool Model100Side::isDeviceAvailable() {
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return true;
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// if the counter is zero, that's the special value that means "we know it's there"
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if (unavailable_device_check_countdown_ == 0) {
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return true;
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}
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int Model100Side::readRegister(uint8_t cmd) {
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// if the time to check counter is 1, check for the device
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else if (--unavailable_device_check_countdown_ == 0) {
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uint8_t wire_result;
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Wire.beginTransmission(addr);
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wire_result = Wire.endTransmission();
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//if the check succeeds
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if (wire_result == 0) {
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// unavailable_device_check_countdown_ = 0; // TODO this is already true
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return true;
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} else {
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// set the time to check counter to max
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unavailable_device_check_countdown_ = UNAVAILABLE_DEVICE_COUNTDOWN_MAX;
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return false;
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}
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} else {
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// we've decremented the counter, but it's not time to probe for the device yet.
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return false;
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}
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byte return_value = 0;
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}
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uint8_t data[] = {cmd};
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uint8_t result = twi_writeTo(addr, data, ELEMENTS(data), 1, 0);
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void Model100Side::markDeviceUnavailable() {
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unavailable_device_check_countdown_ = 1; // We think there was a comms problem. Check on the next cycle
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}
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uint8_t Model100Side::writeData(uint8_t *data, uint8_t length) {
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if (isDeviceAvailable() == false) {
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return 1;
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}
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Wire.beginTransmission(addr);
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Wire.write(data, length);
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uint8_t result = Wire.endTransmission();
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if (result) {
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markDeviceUnavailable();
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}
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return result;
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}
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int Model100Side::readRegister(uint8_t cmd) {
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byte return_value = 0;
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uint8_t data[] = {cmd};
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uint8_t result = writeData(data, ELEMENTS(data));
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// If the setup failed, return. This means there was a problem asking for the register
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if (result) {
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return -1;
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}
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delayMicroseconds(15); // We may be able to drop this in the future
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delayMicroseconds(50); // TODO We may be able to drop this in the future
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// but will need to verify with correctly
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// sized pull-ups on both the left and right
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// hands' i2c SDA and SCL lines
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uint8_t rxBuffer[1];
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uint8_t rxBuffer[1] = {0};
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// perform blocking read into buffer
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uint8_t read = twi_readFrom(addr, rxBuffer, ELEMENTS(rxBuffer), true);
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if (read > 0) {
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return rxBuffer[0];
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Wire.requestFrom(addr, 1); // request 1 byte from the keyscanner
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if (Wire.available()) {
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return Wire.read();
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} else {
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markDeviceUnavailable();
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return -1;
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}
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@ -139,20 +184,28 @@ int Model100Side::readRegister(uint8_t cmd) {
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// gives information on the key that was just pressed or released.
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bool Model100Side::readKeys() {
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if (isDeviceAvailable() == false) {
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return false;
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}
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uint8_t rxBuffer[5];
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uint8_t row_counter = 0;
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// perform blocking read into buffer
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uint8_t read = twi_readFrom(addr, rxBuffer, ELEMENTS(rxBuffer), true);
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if (rxBuffer[0] == TWI_REPLY_KEYDATA) {
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keyData.rows[0] = rxBuffer[1];
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keyData.rows[1] = rxBuffer[2];
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keyData.rows[2] = rxBuffer[3];
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keyData.rows[3] = rxBuffer[4];
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return true;
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} else {
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uint8_t read = 0;
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uint8_t bytes_returned = 0;
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bytes_returned = Wire.requestFrom(addr, 5); // request 5 bytes from the keyscanner
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if (bytes_returned < 5) {
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return false;
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}
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if (Wire.available()) {
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read = Wire.read();
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if (TWI_REPLY_KEYDATA == read) {
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while (Wire.available()) {
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keyData.rows[row_counter++] = Wire.read();
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}
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return true;
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}
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}
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return false;
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}
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keydata_t Model100Side::getKeyData() {
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@ -184,7 +237,7 @@ void Model100Side::sendLEDBank(byte bank) {
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data[i + 1] = pgm_read_byte(&gamma8[c]);
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}
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uint8_t result = twi_writeTo(addr, data, ELEMENTS(data), 1, 0);
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uint8_t result = writeData(data, ELEMENTS(data));
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}
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void Model100Side::setAllLEDsTo(cRGB color) {
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@ -193,7 +246,7 @@ void Model100Side::setAllLEDsTo(cRGB color) {
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pgm_read_byte(&gamma8[color.g]),
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pgm_read_byte(&gamma8[color.r])
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};
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uint8_t result = twi_writeTo(addr, data, ELEMENTS(data), 1, 0);
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uint8_t result = writeData(data, ELEMENTS(data));
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}
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void Model100Side::setOneLEDTo(byte led, cRGB color) {
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@ -203,7 +256,7 @@ void Model100Side::setOneLEDTo(byte led, cRGB color) {
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pgm_read_byte(&gamma8[color.g]),
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pgm_read_byte(&gamma8[color.r])
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};
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uint8_t result = twi_writeTo(addr, data, ELEMENTS(data), 1, 0);
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uint8_t result = writeData(data, ELEMENTS(data));
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}
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Jesse Vincent
3 years ago