diff options
Diffstat (limited to 'keyboards/lfkeyboards')
115 files changed, 0 insertions, 6371 deletions
diff --git a/keyboards/lfkeyboards/TWIlib.c b/keyboards/lfkeyboards/TWIlib.c deleted file mode 100644 index d50ce72895..0000000000 --- a/keyboards/lfkeyboards/TWIlib.c +++ /dev/null @@ -1,296 +0,0 @@ -/* - * TWIlib.c - * - * Created: 6/01/2014 10:41:33 PM - * Author: Chris Herring - */ - -#include <avr/io.h> -#include <avr/interrupt.h> -#include "TWIlib.h" -#include <util/delay.h> -#include "print.h" - -// Global transmit buffer -volatile uint8_t *TWITransmitBuffer; -// Global receive buffer -volatile uint8_t TWIReceiveBuffer[RXMAXBUFLEN]; -// Buffer indexes -volatile int TXBuffIndex; // Index of the transmit buffer. Is volatile, can change at any time. -int RXBuffIndex; // Current index in the receive buffer -// Buffer lengths -int TXBuffLen; // The total length of the transmit buffer -int RXBuffLen; // The total number of bytes to read (should be less than RXMAXBUFFLEN) - -TWIInfoStruct TWIInfo; - -void TWIInit() -{ - TWIInfo.mode = Ready; - TWIInfo.errorCode = 0xFF; - TWIInfo.repStart = 0; - // Set pre-scalers (no pre-scaling) - TWSR = 0; - // Set bit rate - TWBR = ((F_CPU / TWI_FREQ) - 16) / 2; - // Enable TWI and interrupt - TWCR = (1 << TWIE) | (1 << TWEN); -} - -uint8_t isTWIReady() -{ - if ( (TWIInfo.mode == Ready) | (TWIInfo.mode == RepeatedStartSent) ) - { - return 1; - } - else - { - if(TWIInfo.mode == Initializing){ - switch(TWIInfo.errorCode){ - case TWI_SUCCESS: - case TWI_NO_RELEVANT_INFO: - break; - case TWI_LOST_ARBIT: - case TWI_MT_DATA_NACK: - // Some kind of I2C error, reset and re-init - xprintf("I2C init error: %d\n", TWIInfo.errorCode); - TWCR = (1 << TWINT)|(1 << TWSTO); - TWIInit(); - break; - default: - xprintf("Other i2c init error: %d\n", TWIInfo.errorCode); - } - } - return 0; - } -} - - -void TWITransmitData(void *const TXdata, uint8_t dataLen, uint8_t repStart, uint8_t blocking) -{ - // Wait until ready - while (!isTWIReady()) {_delay_us(1);} - // Reset the I2C stuff - TWCR = (1 << TWINT)|(1 << TWSTO); - TWIInit(); - // Set repeated start mode - TWIInfo.repStart = repStart; - // Copy transmit info to global variables - TWITransmitBuffer = (uint8_t *)TXdata; - TXBuffLen = dataLen; - TXBuffIndex = 0; - - // If a repeated start has been sent, then devices are already listening for an address - // and another start does not need to be sent. - if (TWIInfo.mode == RepeatedStartSent) - { - TWIInfo.mode = Initializing; - TWDR = TWITransmitBuffer[TXBuffIndex++]; // Load data to transmit buffer - TWISendTransmit(); // Send the data - } - else // Otherwise, just send the normal start signal to begin transmission. - { - TWIInfo.mode = Initializing; - TWISendStart(); - } - if(blocking){ - // Wait until ready - while (!isTWIReady()){_delay_us(1);} - } -} - - -// uint8_t TWITransmitData(void *const TXdata, uint8_t dataLen, uint8_t repStart) -// { -// if (dataLen <= TXMAXBUFLEN) -// { -// // Wait until ready -// while (!isTWIReady()) {_delay_us(1);} -// // Set repeated start mode -// TWIInfo.repStart = repStart; -// // Copy data into the transmit buffer -// uint8_t *data = (uint8_t *)TXdata; -// for (int i = 0; i < dataLen; i++) -// { -// TWITransmitBuffer[i] = data[i]; -// } -// // Copy transmit info to global variables -// TXBuffLen = dataLen; -// TXBuffIndex = 0; - -// // If a repeated start has been sent, then devices are already listening for an address -// // and another start does not need to be sent. -// if (TWIInfo.mode == RepeatedStartSent) -// { -// TWIInfo.mode = Initializing; -// TWDR = TWITransmitBuffer[TXBuffIndex++]; // Load data to transmit buffer -// TWISendTransmit(); // Send the data -// } -// else // Otherwise, just send the normal start signal to begin transmission. -// { -// TWIInfo.mode = Initializing; -// TWISendStart(); -// } - -// } -// else -// { -// return 1; // return an error if data length is longer than buffer -// } -// return 0; -// } - -uint8_t TWIReadData(uint8_t TWIaddr, uint8_t bytesToRead, uint8_t repStart) -{ - // Check if number of bytes to read can fit i |