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-rw-r--r--common_features.mk2
-rw-r--r--drivers/avr/TWIlib.c232
-rw-r--r--drivers/avr/TWIlib.h82
-rwxr-xr-xdrivers/avr/i2c_master.c149
-rwxr-xr-xdrivers/avr/i2c_master.h22
-rw-r--r--drivers/avr/is31fl3731.c36
-rw-r--r--quantum/rgb_matrix.c6
7 files changed, 185 insertions, 344 deletions
diff --git a/common_features.mk b/common_features.mk
index 7ba7d48154..0778f8e0f5 100644
--- a/common_features.mk
+++ b/common_features.mk
@@ -117,7 +117,7 @@ endif
ifeq ($(strip $(RGB_MATRIX_ENABLE)), yes)
OPT_DEFS += -DRGB_MATRIX_ENABLE
SRC += is31fl3731.c
- SRC += TWIlib.c
+ SRC += i2c_master.c
SRC += $(QUANTUM_DIR)/color.c
SRC += $(QUANTUM_DIR)/rgb_matrix.c
CIE1931_CURVE = yes
diff --git a/drivers/avr/TWIlib.c b/drivers/avr/TWIlib.c
deleted file mode 100644
index b39e3054a5..0000000000
--- a/drivers/avr/TWIlib.c
+++ /dev/null
@@ -1,232 +0,0 @@
-/*
- * TWIlib.c
- *
- * Created: 6/01/2014 10:41:33 PM
- * Author: Chris Herring
- * http://www.chrisherring.net/all/tutorial-interrupt-driven-twi-interface-for-avr-part1/
- */
-
-#include <avr/io.h>
-#include <avr/interrupt.h>
-#include "TWIlib.h"
-#include "util/delay.h"
-
-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
- {
- return 0;
- }
-}
-
-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 in the RXbuffer
- if (bytesToRead < RXMAXBUFLEN)
- {
- // Reset buffer index and set RXBuffLen to the number of bytes to read
- RXBuffIndex = 0;
- RXBuffLen = bytesToRead;
- // Create the one value array for the address to be transmitted
- uint8_t TXdata[1];
- // Shift the address and AND a 1 into the read write bit (set to write mode)
- TXdata[0] = (TWIaddr << 1) | 0x01;
- // Use the TWITransmitData function to initialize the transfer and address the slave
- TWITransmitData(TXdata, 1, repStart);
- }
- else
- {
- return 0;
- }
- return 1;
-}
-
-ISR (TWI_vect)
-{
- switch (TWI_STATUS)
- {
- // ----\/ ---- MASTER TRANSMITTER OR WRITING ADDRESS ----\/ ---- //
- case TWI_MT_SLAW_ACK: // SLA+W transmitted and ACK received
- // Set mode to Master Transmitter
- TWIInfo.mode = MasterTransmitter;
- case TWI_START_SENT: // Start condition has been transmitted
- case TWI_MT_DATA_ACK: // Data byte has been transmitted, ACK received
- if (TXBuffIndex < TXBuffLen) // If there is more data to send
- {
- TWDR = TWITransmitBuffer[TXBuffIndex++]; // Load data to transmit buffer
- TWIInfo.errorCode = TWI_NO_RELEVANT_INFO;
- TWISendTransmit(); // Send the data
- }
- // This transmission is complete however do not release bus yet
- else if (TWIInfo.repStart)
- {
- TWIInfo.errorCode = 0xFF;
- TWISendStart();
- }
- // All transmissions are complete, exit
- else
- {
- TWIInfo.mode = Ready;
- TWIInfo.errorCode = 0xFF;
- TWISendStop();
- }
- break;
-
- // ----\/ ---- MASTER RECEIVER ----\/ ---- //
-
- case TWI_MR_SLAR_ACK: // SLA+R has been transmitted, ACK has been received
- // Switch to Master Receiver mode
- TWIInfo.mode = MasterReceiver;
- // If there is more than one byte to be read, receive data byte and return an ACK
- if (RXBuffIndex < RXBuffLen-1)
- {
- TWIInfo.errorCode = TWI_NO_RELEVANT_INFO;
- TWISendACK();
- }
- // Otherwise when a data byte (the only data byte) is received, return NACK
- else
- {
- TWIInfo.errorCode = TWI_NO_RELEVANT_INFO;
- TWISendNACK();
- }
- break;
-
- case TWI_MR_DATA_ACK: // Data has been received, ACK has been transmitted.
-
- /// -- HANDLE DATA BYTE --- ///
- TWIReceiveBuffer[RXBuffIndex++] = TWDR;
- // If there is more than one byte to be read, receive data byte and return an ACK
- if (RXBuffIndex < RXBuffLen-1)
- {
- TWIInfo.errorCode = TWI_NO_RELEVANT_INFO;
- TWISendACK();
- }
- // Otherwise when a data byte (the only data byte) is received, return NACK
- else
- {
- TWIInfo.errorCode = TWI_NO_RELEVANT_INFO;
- TWISendNACK();
- }
- break;
-
- case TWI_MR_DATA_NACK: // Data byte has been received, NACK has been transmitted. End of transmission.
-
- /// -- HANDLE DATA BYTE --- ///
- TWIReceiveBuffer[RXBuffIndex++] = TWDR;
- // This transmission is complete however do not release bus yet
- if (TWIInfo.repStart)
- {
- TWIInfo.errorCode = 0xFF;
- TWISendStart();
- }
- // All transmissions are complete, exit
- else
- {
- TWIInfo.mode = Ready;
- TWIInfo.errorCode = 0xFF;
- TWISendStop();
- }
- break;
-
- // ----\/ ---- MT and MR common ----\/ ---- //
-
- case TWI_MR_SLAR_NACK: // SLA+R transmitted, NACK received
- case TWI_MT_SLAW_NACK: // SLA+W transmitted, NACK received
- case TWI_MT_DATA_NACK: // Data byte has been transmitted, NACK received
- case TWI_LOST_ARBIT: // Arbitration has been lost
- // Return error and send stop and set mode to ready
- if (TWIInfo.repStart)
- {
- TWIInfo.errorCode = TWI_STATUS;
- TWISendStart();
- }
- // All transmissions are complete, exit
- else
- {
- TWIInfo.mode = Ready;
- TWIInfo.errorCode = TWI_STATUS;
- TWISendStop();
- }
- break;
- case TWI_REP_START_SENT: // Repeated start has been transmitted
- // Set the mode but DO NOT clear TWINT as the next data is not yet ready
- TWIInfo.mode = RepeatedStartSent;
- break;
-
- // ----\/ ---- SLAVE RECEIVER ----\/ ---- //
-
- // TODO IMPLEMENT SLAVE RECEIVER FUNCTIONALITY
-
- // ----\/ ---- SLAVE TRANSMITTER ----\/ ---- //
-
- // TODO IMPLEMENT SLAVE TRANSMITTER FUNCTIONALITY
-
- // ----\/ ---- MISCELLANEOUS STATES ----\/ ---- //
- case TWI_NO_RELEVANT_INFO: // It is not really possible to get into this ISR on this condition
- // Rather, it is there to be manually set between operations
- break;
- case TWI_ILLEGAL_START_STOP: // Illegal START/STOP, abort and return error
- TWIInfo.errorCode = TWI_ILLEGAL_START_STOP;
- TWIInfo.mode = Ready;
- TWISendStop();
- break;
- }
-
-}
diff --git a/drivers/avr/TWIlib.h b/drivers/avr/TWIlib.h
deleted file mode 100644
index 23fd1f09aa..0000000000
--- a/drivers/avr/TWIlib.h
+++ /dev/null
@@ -1,82 +0,0 @@
-/*
- * TWIlib.h
- *
- * Created: 6/01/2014 10:38:42 PM
- * Author: Chris Herring
- * http://www.chrisherring.net/all/tutorial-interrupt-driven-twi-interface-for-avr-part1/
- */
-
-
-#ifndef TWILIB_H_
-#define TWILIB_H_
-// TWI bit rate (was 100000)
-#define TWI_FREQ 400000
-// Get TWI status
-#define TWI_STATUS (TWSR & 0xF8)
-// Transmit buffer length
-#define TXMAXBUFLEN 20
-// Receive buffer length
-#define RXMAXBUFLEN 20
-// Global transmit buffer
-uint8_t TWITransmitBuffer[TXMAXBUFLEN];
-// 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)
-
-typedef enum {
- Ready,
- Initializing,
- RepeatedStartSent,
- MasterTransmitter,
- MasterReceiver,
- SlaceTransmitter,
- SlaveReciever
- } TWIMode;
-
- typedef struct TWIInfoStruct{
- TWIMode mode;
- uint8_t errorCode;
- uint8_t repStart;
- }TWIInfoStruct;
-TWIInfoStruct TWIInfo;
-
-
-// TWI Status Codes
-#define TWI_START_SENT 0x08 // Start sent
-#define TWI_REP_START_SENT 0x10 // Repeated Start sent
-// Master Transmitter Mode
-#define TWI_MT_SLAW_ACK 0x18 // SLA+W sent and ACK received
-#define TWI_MT_SLAW_NACK 0x20 // SLA+W sent and NACK received
-#define TWI_MT_DATA_ACK 0x28 // DATA sent and ACK received
-#define TWI_MT_DATA_NACK 0x30 // DATA sent and NACK received
-// Master Receiver Mode
-#define TWI_MR_SLAR_ACK 0x40 // SLA+R sent, ACK received
-#define TWI_MR_SLAR_NACK 0x48 // SLA+R sent, NACK received
-#define TWI_MR_DATA_ACK 0x50 // Data received, ACK returned
-#define TWI_MR_DATA_NACK 0x58 // Data received, NACK returned
-
-// Miscellaneous States
-#define TWI_LOST_ARBIT 0x38 // Arbitration has been lost
-#define TWI_NO_RELEVANT_INFO 0xF8 // No relevant information available
-#define TWI_ILLEGAL_START_STOP 0x00 // Illegal START or STOP condition has been detected
-#define TWI_SUCCESS 0xFF // Successful transfer, this state is impossible from TWSR as bit2 is 0 and read only
-
-
-#define TWISendStart() (TWCR = (1<<TWINT)|(1<<TWSTA)|(1<<TWEN)|(1<<TWIE)) // Send the START signal, enable interrupts and TWI, clear TWINT flag to resume transfer.
-#define TWISendStop() (TWCR = (1<<TWINT)|(1<<TWSTO)|(1<<TWEN)|(1<<TWIE)) // Send the STOP signal, enable interrupts and TWI, clear TWINT flag.
-#define TWISendTransmit() (TWCR = (1<<TWINT)|(1<<TWEN)|(1<<TWIE)) // Used to resume a transfer, clear TWINT and ensure that TWI and interrupts are enabled.
-#define TWISendACK() (TWCR = (1<<TWINT)|(1<<TWEN)|(1<<TWIE)|(1<<TWEA)) // FOR MR mode. Resume a transfer, ensure that TWI and interrupts are enabled and respond with an ACK if the device is addressed as a slave or after it receives a byte.
-#define TWISendNACK() (TWCR = (1<<TWINT)|(1<<TWEN)|(1<<TWIE)) // FOR MR mode. Resume a transfer, ensure that TWI and interrupts are enabled but DO NOT respond with an ACK if the device is addressed as a slave or after it receives a byte.
-
-// Function declarations
-uint8_t TWITransmitData(void *const TXdata, uint8_t dataLen, uint8_t repStart);
-void TWIInit(void);
-uint8_t TWIReadData(uint8_t TWIaddr, uint8_t bytesToRead, uint8_t repStart);
-uint8_t isTWIReady(void);
-
-#endif // TWICOMMS_H_ \ No newline at end of file
diff --git a/drivers/avr/i2c_master.c b/drivers/avr/i2c_master.c
new file mode 100755
index 0000000000..f4a4bb7b0b
--- /dev/null
+++ b/drivers/avr/i2c_master.c
@@ -0,0 +1,149 @@
+/* Library made by: g4lvanix
+ * Github repository: https://github.com/g4lvanix/I2C-master-lib
+ */
+
+#include <avr/io.h>
+#include <util/twi.h>
+
+#include "i2c_master.h"
+
+#define F_SCL 400000UL // SCL frequency
+#define Prescaler 1
+#define TWBR_val ((((F_CPU / F_SCL) / Prescaler) - 16 ) / 2)
+
+void i2c_init(void)
+{
+ TWBR = (uint8_t)TWBR_val;
+}
+
+uint8_t i2c_start(uint8_t address)
+{
+ // reset TWI control register
+ TWCR = 0;
+ // transmit START condition
+ TWCR = (1<<TWINT) | (1<<TWSTA) | (1<<TWEN);
+ // wait for end of transmission
+ while( !(TWCR & (1<<TWINT)) );
+
+ // check if the start condition was successfully transmitted
+ if((TWSR & 0xF8) != TW_START){ return 1; }
+
+ // load slave address into data register
+ TWDR = address;
+ // start transmission of address
+ TWCR = (1<<TWINT) | (1<<TWEN);
+ // wait for end of transmission
+ while( !(TWCR & (1<<TWINT)) );
+
+ // check if the device has acknowledged the READ / WRITE mode
+ uint8_t twst = TW_STATUS & 0xF8;
+ if ( (twst != TW_MT_SLA_ACK) && (twst != TW_MR_SLA_ACK) ) return 1;
+
+ return 0;
+}
+
+uint8_t i2c_write(uint8_t data)
+{
+ // load data into data register
+ TWDR = data;
+ // start transmission of data
+ TWCR = (1<<TWINT) | (1<<TWEN);
+ // wait for end of transmission
+ while( !(TWCR & (1<<TWINT)) );
+
+ if( (TWSR & 0xF8) != TW_MT_DATA_ACK ){ return 1; }
+
+ return 0;
+}
+
+uint8_t i2c_read_ack(void)
+{
+
+ // start TWI module and acknowledge data after reception
+ TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWEA);
+ // wait for end of transmission
+ while( !(TWCR & (1<<TWINT)) );
+ // return received data from TWDR
+ return TWDR;
+}
+
+uint8_t i2c_read_nack(void)
+{
+
+ // start receiving without acknowledging reception
+ TWCR = (1<<TWINT) | (1<<TWEN);
+ // wait for end of transmission
+ while( !(TWCR & (1<<TWINT)) );
+ // return received data from TWDR
+ return TWDR;
+}
+
+uint8_t i2c_transmit(uint8_t address, uint8_t* data, uint16_t length)
+{
+ if (i2c_start(address | I2C_WRITE)) return 1;
+
+ for (uint16_t i = 0; i < length; i++)
+ {
+ if (i2c_write(data[i])) return 1;
+ }
+
+ i2c_stop();
+
+ return 0;
+}
+
+uint8_t i2c_receive(uint8_t address, uint8_t* data, uint16_t length)
+{
+ if (i2c_start(address | I2C_READ)) return 1;
+
+ for (uint16_t i = 0; i < (length-1); i++)
+ {
+ data[i] = i2c_read_ack();
+ }
+ data[(length-1)] = i2c_read_nack();
+
+ i2c_stop();
+
+ return 0;
+}
+
+uint8_t i2c_writeReg(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16_t length)
+{
+ if (i2c_start(devaddr | 0x00)) return 1;
+
+ i2c_write(regaddr);
+
+ for (uint16_t i = 0; i < length; i++)
+ {
+ if (i2c_write(data[i])) return 1;
+ }
+
+ i2c_stop();
+
+ return 0;
+}
+
+uint8_t i2c_readReg(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16_t length)
+{
+ if (i2c_start(devaddr)) return 1;
+
+ i2c_write(regaddr);
+
+ if (i2c_start(devaddr | 0x01)) return 1;
+
+ for (uint16_t i = 0; i < (length-1); i++)
+ {
+ data[i] = i2c_read_ack();
+ }
+ data[(length-1)] = i2c_read_nack();
+
+ i2c_stop();
+
+ return 0;
+}
+
+void i2c_stop(void)
+{
+ // transmit STOP condition
+ TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO);
+}
diff --git a/drivers/avr/i2c_master.h b/drivers/avr/i2c_master.h
new file mode 100755
index 0000000000..2479d28d52
--- /dev/null
+++ b/drivers/avr/i2c_master.h
@@ -0,0 +1,22 @@
+/* Library made by: g4lvanix
+ * Github repository: https://github.com/g4lvanix/I2C-master-lib
+ */
+
+#ifndef I2C_MASTER_H
+#define I2C_MASTER_H
+
+#define I2C_READ 0x01
+#define I2C_WRITE 0x00
+
+void i2c_init(void);
+uint8_t i2c_start(uint8_t address);
+uint8_t i2c_write(uint8_t data);
+uint8_t i2c_read_ack(void);
+uint8_t i2c_read_nack(void);
+uint8_t i2c_transmit(uint8_t address, uint8_t* data, uint16_t length);
+uint8_t i2c_receive(uint8_t address, uint8_t* data, uint16_t length);
+uint8_t i2c_writeReg(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16_t length);
+uint8_t i2c_readReg(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16_t length);
+void i2c_stop(void);
+
+#endif // I2C_MASTER_H
diff --git a/drivers/avr/is31fl3731.c b/drivers/avr/is31fl3731.c
index e5941cf41e..c7a99e3a3d 100644
--- a/drivers/avr/is31fl3731.c
+++ b/drivers/avr/is31fl3731.c
@@ -20,7 +20,7 @@
#include <avr/io.h>
#include <util/delay.h>
#include <string.h>
-#include "TWIlib.h"
+#include "i2c_master.h"
#include "progmem.h"
// This is a 7-bit address, that gets left-shifted and bit 0
@@ -50,7 +50,7 @@
#define ISSI_BANK_FUNCTIONREG 0x0B // helpfully called 'page nine'
// Transfer buffer for TWITransmitData()
-uint8_t g_twi_transfer_buffer[TXMAXBUFLEN];
+uint8_t g_twi_transfer_buffer[20];
// These buffers match the IS31FL3731 PWM registers 0x24-0xB3.
// Storing them like this is optimal for I2C transfers to the registers.
@@ -80,17 +80,11 @@ bool g_led_control_registers_update_required = false;
void IS31FL3731_write_register( uint8_t addr, uint8_t reg, uint8_t data )
{
- g_twi_transfer_buffer[0] = (addr << 1) | 0x00;
- g_twi_transfer_buffer[1] = reg;
- g_twi_transfer_buffer[2] = data;
-
- // Set the error code to have no relevant information
- TWIInfo.errorCode = TWI_NO_RELEVANT_INFO;
- // Continuously attempt to transmit data until a successful transmission occurs
- //while ( TWIInfo.errorCode != 0xFF )
- //{
- TWITransmitData( g_twi_transfer_buffer, 3, 0 );
- //}
+ g_twi_transfer_buffer[0] = reg;
+ g_twi_transfer_buffer[1] = data;
+
+ //Transmit data until succesful
+ while(i2c_transmit(addr << 1, g_twi_transfer_buffer,2) != 0);
}
void IS31FL3731_write_pwm_buffer( uint8_t addr, uint8_t *pwm_buffer )
@@ -100,29 +94,21 @@ void IS31FL3731_write_pwm_buffer( uint8_t addr, uint8_t *pwm_buffer )
// transmit PWM registers in 9 transfers of 16 bytes
// g_twi_transfer_buffer[] is 20 bytes
- // set the I2C address
- g_twi_transfer_buffer[0] = (addr << 1) | 0x00;
-
// iterate over the pwm_buffer contents at 16 byte intervals
for ( int i = 0; i < 144; i += 16 )
{
// set the first register, e.g. 0x24, 0x34, 0x44, etc.
- g_twi_transfer_buffer[1] = 0x24 + i;
+ g_twi_transfer_buffer[0] = 0x24 + i;
// copy the data from i to i+15
// device will auto-increment register for data after the first byte
// thus this sets registers 0x24-0x33, 0x34-0x43, etc. in one transfer
for ( int j = 0; j < 16; j++ )
{
- g_twi_transfer_buffer[2 + j] = pwm_buffer[i + j];
+ g_twi_transfer_buffer[1 + j] = pwm_buffer[i + j];
}
- // Set the error code to have no relevant information
- TWIInfo.errorCode = TWI_NO_RELEVANT_INFO;
- // Continuously attempt to transmit data until a successful transmission occurs
- while ( TWIInfo.errorCode != 0xFF )
- {
- TWITransmitData( g_twi_transfer_buffer, 16 + 2, 0 );
- }
+ //Transmit buffer until succesful
+ while(i2c_transmit(addr << 1, g_twi_transfer_buffer,17) != 0);
}
}
diff --git a/quantum/rgb_matrix.c b/quantum/rgb_matrix.c
index f3d012bc3e..992ce99de9 100644
--- a/quantum/rgb_matrix.c
+++ b/quantum/rgb_matrix.c
@@ -18,7 +18,7 @@
#include "rgb_matrix.h"
#include <avr/io.h>
-#include "TWIlib.h"
+#include "i2c_master.h"
#include <util/delay.h>
#include <avr/interrupt.h>
#include "progmem.h"
@@ -722,10 +722,8 @@ void rgb_matrix_indicators_user(void) {}
// }
void rgb_matrix_init_drivers(void) {
- //sei();
-
// Initialize TWI
- TWIInit();
+ i2c_init();
IS31FL3731_init( DRIVER_ADDR_1 );
IS31FL3731_init( DRIVER_ADDR_2 );
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-02 17:25:14 +0000