--- /dev/null
+/* Copyright 2018 Jack Humbert
+ * Copyright 2018 Yiancar
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/* This library follows the convention of the AVR i2c_master library.
+ * As a result addresses are expected to be already shifted (addr << 1).
+ * I2CD1 is the default driver which corresponds to pins B6 and B7. This
+ * can be changed.
+ * Please ensure that HAL_USE_I2C is TRUE in the halconf.h file and that
+ * STM32_I2C_USE_I2C1 is TRUE in the mcuconf.h file.
+ */
+
+#include "i2c_master.h"
+#include <string.h>
+#include <hal.h>
+
+static uint8_t i2c_address;
+
+// This configures the I2C clock to 400Mhz assuming a 72Mhz clock
+// For more info : https://www.st.com/en/embedded-software/stsw-stm32126.html
+static const I2CConfig i2cconfig = {
+ STM32_TIMINGR_PRESC(15U) |
+ STM32_TIMINGR_SCLDEL(4U) | STM32_TIMINGR_SDADEL(2U) |
+ STM32_TIMINGR_SCLH(15U) | STM32_TIMINGR_SCLL(21U),
+ 0,
+ 0
+};
+
+void i2c_init(void)
+{
+ palSetGroupMode(GPIOB,6,7, PAL_MODE_INPUT); // Try releasing special pins for a short time
+ chThdSleepMilliseconds(10);
+
+ palSetPadMode(GPIOB, 6, PAL_MODE_ALTERNATE(4) | PAL_STM32_OTYPE_OPENDRAIN | PAL_STM32_PUPDR_PULLUP);
+ palSetPadMode(GPIOB, 7, PAL_MODE_ALTERNATE(4) | PAL_STM32_OTYPE_OPENDRAIN | PAL_STM32_PUPDR_PULLUP);
+
+ //i2cInit(); //This is invoked by halInit() so no need to redo it.
+}
+
+// This is usually not needed
+uint8_t i2c_start(uint8_t address)
+{
+ i2c_address = address;
+ i2cStart(&I2C_DRIVER, &i2cconfig);
+ return 0;
+}
+
+uint8_t i2c_transmit(uint8_t address, uint8_t* data, uint16_t length, uint16_t timeout)
+{
+ i2c_address = address;
+ i2cStart(&I2C_DRIVER, &i2cconfig);
+ return i2cMasterTransmitTimeout(&I2C_DRIVER, (i2c_address >> 1), data, length, 0, 0, MS2ST(timeout));
+}
+
+uint8_t i2c_receive(uint8_t address, uint8_t* data, uint16_t length, uint16_t timeout)
+{
+ i2c_address = address;
+ i2cStart(&I2C_DRIVER, &i2cconfig);
+ return i2cMasterReceiveTimeout(&I2C_DRIVER, (i2c_address >> 1), data, length, MS2ST(timeout));
+}
+
+uint8_t i2c_writeReg(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16_t length, uint16_t timeout)
+{
+ i2c_address = devaddr;
+ i2cStart(&I2C_DRIVER, &i2cconfig);
+
+ uint8_t complete_packet[length + 1];
+ for(uint8_t i = 0; i < length; i++)
+ {
+ complete_packet[i+1] = data[i];
+ }
+ complete_packet[0] = regaddr
+
+ return i2cMasterTransmitTimeout(&I2C_DRIVER, (i2c_address >> 1), complete_packet, length + 1, 0, 0, MS2ST(timeout));
+}
+
+uint8_t i2c_readReg(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16_t length, uint16_t timeout)
+{
+ i2c_address = devaddr;
+ i2cStart(&I2C_DRIVER, &i2cconfig);
+ return i2cMasterTransmitTimeout(&I2C_DRIVER, (i2c_address >> 1), regaddr, 1, data, length, MS2ST(timeout));
+}
+
+// This is usually not needed. It releases the driver to allow pins to become GPIO again.
+uint8_t i2c_stop(uint16_t timeout)
+{
+ i2c_address = address;
+ i2cStop(&I2C_DRIVER);
+ return 0;
+}
--- /dev/null
+/* Copyright 2018 Jack Humbert
+ * Copyright 2018 Yiancar
+ *
+ * This program is free sofare: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Sofare Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/* This library follows the convention of the AVR i2c_master library.
+ * As a result addresses are expected to be already shifted (addr << 1).
+ * I2CD1 is the default driver which corresponds to pins B6 and B7. This
+ * can be changed.
+ * Please ensure that HAL_USE_I2C is TRUE in the halconf.h file and that
+ * STM32_I2C_USE_I2C1 is TRUE in the mcuconf.h file.
+ */
+
+#include "ch.h"
+#include <hal.h>
+
+#ifndef I2C_DRIVER
+ #define I2C_DRIVER I2CD1
+#endif
+
+void i2c_init(void);
+uint8_t i2c_start(uint8_t address);
+uint8_t i2c_transmit(uint8_t address, uint8_t* data, uint16_t length, uint16_t timeout);
+uint8_t i2c_receive(uint8_t address, uint8_t* data, uint16_t length, uint16_t timeout);
+uint8_t i2c_writeReg(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16_t length, uint16_t timeout);
+uint8_t i2c_readReg(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16_t length, uint16_t timeout);
+void i2c_stop(void);
+++ /dev/null
-/* Copyright 2017 Jason Williams
- * Copyright 2018 Jack Humbert
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include "is31fl3731.h"
-#include <avr/interrupt.h>
-#include <avr/io.h>
-#include <util/delay.h>
-#include <string.h>
-#include "i2c_master.h"
-#include "progmem.h"
-
-// This is a 7-bit address, that gets left-shifted and bit 0
-// set to 0 for write, 1 for read (as per I2C protocol)
-// The address will vary depending on your wiring:
-// 0b1110100 AD <-> GND
-// 0b1110111 AD <-> VCC
-// 0b1110101 AD <-> SCL
-// 0b1110110 AD <-> SDA
-#define ISSI_ADDR_DEFAULT 0x74
-
-#define ISSI_REG_CONFIG 0x00
-#define ISSI_REG_CONFIG_PICTUREMODE 0x00
-#define ISSI_REG_CONFIG_AUTOPLAYMODE 0x08
-#define ISSI_REG_CONFIG_AUDIOPLAYMODE 0x18
-
-#define ISSI_CONF_PICTUREMODE 0x00
-#define ISSI_CONF_AUTOFRAMEMODE 0x04
-#define ISSI_CONF_AUDIOMODE 0x08
-
-#define ISSI_REG_PICTUREFRAME 0x01
-
-#define ISSI_REG_SHUTDOWN 0x0A
-#define ISSI_REG_AUDIOSYNC 0x06
-
-#define ISSI_COMMANDREGISTER 0xFD
-#define ISSI_BANK_FUNCTIONREG 0x0B // helpfully called 'page nine'
-
-#ifndef ISSI_TIMEOUT
- #define ISSI_TIMEOUT 100
-#endif
-
-#ifndef ISSI_PERSISTENCE
- #define ISSI_PERSISTENCE 0
-#endif
-
-// Transfer buffer for TWITransmitData()
-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.
-// We could optimize this and take out the unused registers from these
-// buffers and the transfers in IS31FL3731_write_pwm_buffer() but it's
-// probably not worth the extra complexity.
-uint8_t g_pwm_buffer[DRIVER_COUNT][144];
-bool g_pwm_buffer_update_required = false;
-
-uint8_t g_led_control_registers[DRIVER_COUNT][18] = { { 0 }, { 0 } };
-bool g_led_control_registers_update_required = false;
-
-// This is the bit pattern in the LED control registers
-// (for matrix A, add one to register for matrix B)
-//
-// reg - b7 b6 b5 b4 b3 b2 b1 b0
-// 0x00 - R08,R07,R06,R05,R04,R03,R02,R01
-// 0x02 - G08,G07,G06,G05,G04,G03,G02,R00
-// 0x04 - B08,B07,B06,B05,B04,B03,G01,G00
-// 0x06 - - , - , - , - , - ,B02,B01,B00
-// 0x08 - - , - , - , - , - , - , - , -
-// 0x0A - B17,B16,B15, - , - , - , - , -
-// 0x0C - G17,G16,B14,B13,B12,B11,B10,B09
-// 0x0E - R17,G15,G14,G13,G12,G11,G10,G09
-// 0x10 - R16,R15,R14,R13,R12,R11,R10,R09
-
-
-void IS31FL3731_write_register( uint8_t addr, uint8_t reg, uint8_t data )
-{
- g_twi_transfer_buffer[0] = reg;
- g_twi_transfer_buffer[1] = data;
-
- #if ISSI_PERSISTENCE > 0
- for (uint8_t i = 0; i < ISSI_PERSISTENCE; i++) {
- if (i2c_transmit(addr << 1, g_twi_transfer_buffer, 2, ISSI_TIMEOUT) == 0)
- break;
- }
- #else
- i2c_transmit(addr << 1, g_twi_transfer_buffer, 2, ISSI_TIMEOUT);
- #endif
-}
-
-void IS31FL3731_write_pwm_buffer( uint8_t addr, uint8_t *pwm_buffer )
-{
- // assumes bank is already selected
-
- // transmit PWM registers in 9 transfers of 16 bytes
- // g_twi_transfer_buffer[] is 20 bytes
-
- // 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[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[1 + j] = pwm_buffer[i + j];
- }
-
- #if ISSI_PERSISTENCE > 0
- for (uint8_t i = 0; i < ISSI_PERSISTENCE; i++) {
- if (i2c_transmit(addr << 1, g_twi_transfer_buffer, 17, ISSI_TIMEOUT) == 0)
- break;
- }
- #else
- i2c_transmit(addr << 1, g_twi_transfer_buffer, 17, ISSI_TIMEOUT);
- #endif
- }
-}
-
-void IS31FL3731_init( uint8_t addr )
-{
- // In order to avoid the LEDs being driven with garbage data
- // in the LED driver's PWM registers, first enable software shutdown,
- // then set up the mode and other settings, clear the PWM registers,
- // then disable software shutdown.
-
- // select "function register" bank
- IS31FL3731_write_register( addr, ISSI_COMMANDREGISTER, ISSI_BANK_FUNCTIONREG );
-
- // enable software shutdown
- IS31FL3731_write_register( addr, ISSI_REG_SHUTDOWN, 0x00 );
- // this delay was copied from other drivers, might not be needed
- _delay_ms( 10 );
-
- // picture mode
- IS31FL3731_write_register( addr, ISSI_REG_CONFIG, ISSI_REG_CONFIG_PICTUREMODE );
- // display frame 0
- IS31FL3731_write_register( addr, ISSI_REG_PICTUREFRAME, 0x00 );
- // audio sync off
- IS31FL3731_write_register( addr, ISSI_REG_AUDIOSYNC, 0x00 );
-
- // select bank 0
- IS31FL3731_write_register( addr, ISSI_COMMANDREGISTER, 0 );
-
- // turn off all LEDs in the LED control register
- for ( int i = 0x00; i <= 0x11; i++ )
- {
- IS31FL3731_write_register( addr, i, 0x00 );
- }
-
- // turn off all LEDs in the blink control register (not really needed)
- for ( int i = 0x12; i <= 0x23; i++ )
- {
- IS31FL3731_write_register( addr, i, 0x00 );
- }
-
- // set PWM on all LEDs to 0
- for ( int i = 0x24; i <= 0xB3; i++ )
- {
- IS31FL3731_write_register( addr, i, 0x00 );
- }
-
- // select "function register" bank
- IS31FL3731_write_register( addr, ISSI_COMMANDREGISTER, ISSI_BANK_FUNCTIONREG );
-
- // disable software shutdown
- IS31FL3731_write_register( addr, ISSI_REG_SHUTDOWN, 0x01 );
-
- // select bank 0 and leave it selected.
- // most usage after initialization is just writing PWM buffers in bank 0
- // as there's not much point in double-buffering
- IS31FL3731_write_register( addr, ISSI_COMMANDREGISTER, 0 );
-
-}
-
-void IS31FL3731_set_color( int index, uint8_t red, uint8_t green, uint8_t blue )
-{
- if ( index >= 0 && index < DRIVER_LED_TOTAL ) {
- is31_led led = g_is31_leds[index];
-
- // Subtract 0x24 to get the second index of g_pwm_buffer
- g_pwm_buffer[led.driver][led.r - 0x24] = red;
- g_pwm_buffer[led.driver][led.g - 0x24] = green;
- g_pwm_buffer[led.driver][led.b - 0x24] = blue;
- g_pwm_buffer_update_required = true;
- }
-}
-
-void IS31FL3731_set_color_all( uint8_t red, uint8_t green, uint8_t blue )
-{
- for ( int i = 0; i < DRIVER_LED_TOTAL; i++ )
- {
- IS31FL3731_set_color( i, red, green, blue );
- }
-}
-
-void IS31FL3731_set_led_control_register( uint8_t index, bool red, bool green, bool blue )
-{
- is31_led led = g_is31_leds[index];
-
- uint8_t control_register_r = (led.r - 0x24) / 8;
- uint8_t control_register_g = (led.g - 0x24) / 8;
- uint8_t control_register_b = (led.b - 0x24) / 8;
- uint8_t bit_r = (led.r - 0x24) % 8;
- uint8_t bit_g = (led.g - 0x24) % 8;
- uint8_t bit_b = (led.b - 0x24) % 8;
-
- if ( red ) {
- g_led_control_registers[led.driver][control_register_r] |= (1 << bit_r);
- } else {
- g_led_control_registers[led.driver][control_register_r] &= ~(1 << bit_r);
- }
- if ( green ) {
- g_led_control_registers[led.driver][control_register_g] |= (1 << bit_g);
- } else {
- g_led_control_registers[led.driver][control_register_g] &= ~(1 << bit_g);
- }
- if ( blue ) {
- g_led_control_registers[led.driver][control_register_b] |= (1 << bit_b);
- } else {
- g_led_control_registers[led.driver][control_register_b] &= ~(1 << bit_b);
- }
-
- g_led_control_registers_update_required = true;
-
-}
-
-void IS31FL3731_update_pwm_buffers( uint8_t addr1, uint8_t addr2 )
-{
- if ( g_pwm_buffer_update_required )
- {
- IS31FL3731_write_pwm_buffer( addr1, g_pwm_buffer[0] );
- IS31FL3731_write_pwm_buffer( addr2, g_pwm_buffer[1] );
- }
- g_pwm_buffer_update_required = false;
-}
-
-void IS31FL3731_update_led_control_registers( uint8_t addr1, uint8_t addr2 )
-{
- if ( g_led_control_registers_update_required )
- {
- for ( int i=0; i<18; i++ )
- {
- IS31FL3731_write_register(addr1, i, g_led_control_registers[0][i] );
- IS31FL3731_write_register(addr2, i, g_led_control_registers[1][i] );
- }
- }
-}
-
+++ /dev/null
-/* Copyright 2017 Jason Williams
- * Copyright 2018 Jack Humbert
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-
-#ifndef IS31FL3731_DRIVER_H
-#define IS31FL3731_DRIVER_H
-
-#include <stdint.h>
-#include <stdbool.h>
-
-typedef struct is31_led {
- uint8_t driver:2;
- uint8_t r;
- uint8_t g;
- uint8_t b;
-} __attribute__((packed)) is31_led;
-
-extern const is31_led g_is31_leds[DRIVER_LED_TOTAL];
-
-void IS31FL3731_init( uint8_t addr );
-void IS31FL3731_write_register( uint8_t addr, uint8_t reg, uint8_t data );
-void IS31FL3731_write_pwm_buffer( uint8_t addr, uint8_t *pwm_buffer );
-
-void IS31FL3731_set_color( int index, uint8_t red, uint8_t green, uint8_t blue );
-void IS31FL3731_set_color_all( uint8_t red, uint8_t green, uint8_t blue );
-
-void IS31FL3731_set_led_control_register( uint8_t index, bool red, bool green, bool blue );
-
-// This should not be called from an interrupt
-// (eg. from a timer interrupt).
-// Call this while idle (in between matrix scans).
-// If the buffer is dirty, it will update the driver with the buffer.
-void IS31FL3731_update_pwm_buffers( uint8_t addr1, uint8_t addr2 );
-void IS31FL3731_update_led_control_registers( uint8_t addr1, uint8_t addr2 );
-
-#define C1_1 0x24
-#define C1_2 0x25
-#define C1_3 0x26
-#define C1_4 0x27
-#define C1_5 0x28
-#define C1_6 0x29
-#define C1_7 0x2A
-#define C1_8 0x2B
-
-#define C1_9 0x2C
-#define C1_10 0x2D
-#define C1_11 0x2E
-#define C1_12 0x2F
-#define C1_13 0x30
-#define C1_14 0x31
-#define C1_15 0x32
-#define C1_16 0x33
-
-#define C2_1 0x34
-#define C2_2 0x35
-#define C2_3 0x36
-#define C2_4 0x37
-#define C2_5 0x38
-#define C2_6 0x39
-#define C2_7 0x3A
-#define C2_8 0x3B
-
-#define C2_9 0x3C
-#define C2_10 0x3D
-#define C2_11 0x3E
-#define C2_12 0x3F
-#define C2_13 0x40
-#define C2_14 0x41
-#define C2_15 0x42
-#define C2_16 0x43
-
-#define C3_1 0x44
-#define C3_2 0x45
-#define C3_3 0x46
-#define C3_4 0x47
-#define C3_5 0x48
-#define C3_6 0x49
-#define C3_7 0x4A
-#define C3_8 0x4B
-
-#define C3_9 0x4C
-#define C3_10 0x4D
-#define C3_11 0x4E
-#define C3_12 0x4F
-#define C3_13 0x50
-#define C3_14 0x51
-#define C3_15 0x52
-#define C3_16 0x53
-
-#define C4_1 0x54
-#define C4_2 0x55
-#define C4_3 0x56
-#define C4_4 0x57
-#define C4_5 0x58
-#define C4_6 0x59
-#define C4_7 0x5A
-#define C4_8 0x5B
-
-#define C4_9 0x5C
-#define C4_10 0x5D
-#define C4_11 0x5E
-#define C4_12 0x5F
-#define C4_13 0x60
-#define C4_14 0x61
-#define C4_15 0x62
-#define C4_16 0x63
-
-#define C5_1 0x64
-#define C5_2 0x65
-#define C5_3 0x66
-#define C5_4 0x67
-#define C5_5 0x68
-#define C5_6 0x69
-#define C5_7 0x6A
-#define C5_8 0x6B
-
-#define C5_9 0x6C
-#define C5_10 0x6D
-#define C5_11 0x6E
-#define C5_12 0x6F
-#define C5_13 0x70
-#define C5_14 0x71
-#define C5_15 0x72
-#define C5_16 0x73
-
-#define C6_1 0x74
-#define C6_2 0x75
-#define C6_3 0x76
-#define C6_4 0x77
-#define C6_5 0x78
-#define C6_6 0x79
-#define C6_7 0x7A
-#define C6_8 0x7B
-
-#define C6_9 0x7C
-#define C6_10 0x7D
-#define C6_11 0x7E
-#define C6_12 0x7F
-#define C6_13 0x80
-#define C6_14 0x81
-#define C6_15 0x82
-#define C6_16 0x83
-
-#define C7_1 0x84
-#define C7_2 0x85
-#define C7_3 0x86
-#define C7_4 0x87
-#define C7_5 0x88
-#define C7_6 0x89
-#define C7_7 0x8A
-#define C7_8 0x8B
-
-#define C7_9 0x8C
-#define C7_10 0x8D
-#define C7_11 0x8E
-#define C7_12 0x8F
-#define C7_13 0x90
-#define C7_14 0x91
-#define C7_15 0x92
-#define C7_16 0x93
-
-#define C8_1 0x94
-#define C8_2 0x95
-#define C8_3 0x96
-#define C8_4 0x97
-#define C8_5 0x98
-#define C8_6 0x99
-#define C8_7 0x9A
-#define C8_8 0x9B
-
-#define C8_9 0x9C
-#define C8_10 0x9D
-#define C8_11 0x9E
-#define C8_12 0x9F
-#define C8_13 0xA0
-#define C8_14 0xA1
-#define C8_15 0xA2
-#define C8_16 0xA3
-
-#define C9_1 0xA4
-#define C9_2 0xA5
-#define C9_3 0xA6
-#define C9_4 0xA7
-#define C9_5 0xA8
-#define C9_6 0xA9
-#define C9_7 0xAA
-#define C9_8 0xAB
-
-#define C9_9 0xAC
-#define C9_10 0xAD
-#define C9_11 0xAE
-#define C9_12 0xAF
-#define C9_13 0xB0
-#define C9_14 0xB1
-#define C9_15 0xB2
-#define C9_16 0xB3
-
-
-
-#endif // IS31FL3731_DRIVER_H
--- /dev/null
+/* Copyright 2017 Jason Williams
+ * Copyright 2018 Jack Humbert
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifdef __AVR__
+#include <avr/interrupt.h>
+#include <avr/io.h>
+#include <util/delay.h>
+#else
+#include "wait.h"
+#endif
+
+#include "is31fl3731.h"
+#include <string.h>
+#include "i2c_master.h"
+#include "progmem.h"
+
+// This is a 7-bit address, that gets left-shifted and bit 0
+// set to 0 for write, 1 for read (as per I2C protocol)
+// The address will vary depending on your wiring:
+// 0b1110100 AD <-> GND
+// 0b1110111 AD <-> VCC
+// 0b1110101 AD <-> SCL
+// 0b1110110 AD <-> SDA
+#define ISSI_ADDR_DEFAULT 0x74
+
+#define ISSI_REG_CONFIG 0x00
+#define ISSI_REG_CONFIG_PICTUREMODE 0x00
+#define ISSI_REG_CONFIG_AUTOPLAYMODE 0x08
+#define ISSI_REG_CONFIG_AUDIOPLAYMODE 0x18
+
+#define ISSI_CONF_PICTUREMODE 0x00
+#define ISSI_CONF_AUTOFRAMEMODE 0x04
+#define ISSI_CONF_AUDIOMODE 0x08
+
+#define ISSI_REG_PICTUREFRAME 0x01
+
+#define ISSI_REG_SHUTDOWN 0x0A
+#define ISSI_REG_AUDIOSYNC 0x06
+
+#define ISSI_COMMANDREGISTER 0xFD
+#define ISSI_BANK_FUNCTIONREG 0x0B // helpfully called 'page nine'
+
+#ifndef ISSI_TIMEOUT
+ #define ISSI_TIMEOUT 100
+#endif
+
+#ifndef ISSI_PERSISTENCE
+ #define ISSI_PERSISTENCE 0
+#endif
+
+// Transfer buffer for TWITransmitData()
+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.
+// We could optimize this and take out the unused registers from these
+// buffers and the transfers in IS31FL3731_write_pwm_buffer() but it's
+// probably not worth the extra complexity.
+uint8_t g_pwm_buffer[DRIVER_COUNT][144];
+bool g_pwm_buffer_update_required = false;
+
+uint8_t g_led_control_registers[DRIVER_COUNT][18] = { { 0 }, { 0 } };
+bool g_led_control_registers_update_required = false;
+
+// This is the bit pattern in the LED control registers
+// (for matrix A, add one to register for matrix B)
+//
+// reg - b7 b6 b5 b4 b3 b2 b1 b0
+// 0x00 - R08,R07,R06,R05,R04,R03,R02,R01
+// 0x02 - G08,G07,G06,G05,G04,G03,G02,R00
+// 0x04 - B08,B07,B06,B05,B04,B03,G01,G00
+// 0x06 - - , - , - , - , - ,B02,B01,B00
+// 0x08 - - , - , - , - , - , - , - , -
+// 0x0A - B17,B16,B15, - , - , - , - , -
+// 0x0C - G17,G16,B14,B13,B12,B11,B10,B09
+// 0x0E - R17,G15,G14,G13,G12,G11,G10,G09
+// 0x10 - R16,R15,R14,R13,R12,R11,R10,R09
+
+
+void IS31_write_register( uint8_t addr, uint8_t reg, uint8_t data )
+{
+ g_twi_transfer_buffer[0] = reg;
+ g_twi_transfer_buffer[1] = data;
+
+ #if ISSI_PERSISTENCE > 0
+ for (uint8_t i = 0; i < ISSI_PERSISTENCE; i++) {
+ if (i2c_transmit(addr << 1, g_twi_transfer_buffer, 2, ISSI_TIMEOUT) == 0)
+ break;
+ }
+ #else
+ i2c_transmit(addr << 1, g_twi_transfer_buffer, 2, ISSI_TIMEOUT);
+ #endif
+}
+
+void IS31_write_pwm_buffer( uint8_t addr, uint8_t *pwm_buffer )
+{
+ // assumes bank is already selected
+
+ // transmit PWM registers in 9 transfers of 16 bytes
+ // g_twi_transfer_buffer[] is 20 bytes
+
+ // 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[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[1 + j] = pwm_buffer[i + j];
+ }
+
+ #if ISSI_PERSISTENCE > 0
+ for (uint8_t i = 0; i < ISSI_PERSISTENCE; i++) {
+ if (i2c_transmit(addr << 1, g_twi_transfer_buffer, 17, ISSI_TIMEOUT) == 0)
+ break;
+ }
+ #else
+ i2c_transmit(addr << 1, g_twi_transfer_buffer, 17, ISSI_TIMEOUT);
+ #endif
+ }
+}
+
+void IS31_init( uint8_t addr )
+{
+ // In order to avoid the LEDs being driven with garbage data
+ // in the LED driver's PWM registers, first enable software shutdown,
+ // then set up the mode and other settings, clear the PWM registers,
+ // then disable software shutdown.
+
+ // select "function register" bank
+ IS31_write_register( addr, ISSI_COMMANDREGISTER, ISSI_BANK_FUNCTIONREG );
+
+ // enable software shutdown
+ IS31_write_register( addr, ISSI_REG_SHUTDOWN, 0x00 );
+ // this delay was copied from other drivers, might not be needed
+ #ifdef __AVR__
+ _delay_ms( 10 );
+ #else
+ wait_ms(10);
+ #endif
+
+ // picture mode
+ IS31_write_register( addr, ISSI_REG_CONFIG, ISSI_REG_CONFIG_PICTUREMODE );
+ // display frame 0
+ IS31_write_register( addr, ISSI_REG_PICTUREFRAME, 0x00 );
+ // audio sync off
+ IS31_write_register( addr, ISSI_REG_AUDIOSYNC, 0x00 );
+
+ // select bank 0
+ IS31_write_register( addr, ISSI_COMMANDREGISTER, 0 );
+
+ // turn off all LEDs in the LED control register
+ for ( int i = 0x00; i <= 0x11; i++ )
+ {
+ IS31_write_register( addr, i, 0x00 );
+ }
+
+ // turn off all LEDs in the blink control register (not really needed)
+ for ( int i = 0x12; i <= 0x23; i++ )
+ {
+ IS31_write_register( addr, i, 0x00 );
+ }
+
+ // set PWM on all LEDs to 0
+ for ( int i = 0x24; i <= 0xB3; i++ )
+ {
+ IS31_write_register( addr, i, 0x00 );
+ }
+
+ // select "function register" bank
+ IS31_write_register( addr, ISSI_COMMANDREGISTER, ISSI_BANK_FUNCTIONREG );
+
+ // disable software shutdown
+ IS31_write_register( addr, ISSI_REG_SHUTDOWN, 0x01 );
+
+ // select bank 0 and leave it selected.
+ // most usage after initialization is just writing PWM buffers in bank 0
+ // as there's not much point in double-buffering
+ IS31_write_register( addr, ISSI_COMMANDREGISTER, 0 );
+
+}
+
+void IS31_set_color( int index, uint8_t red, uint8_t green, uint8_t blue )
+{
+ if ( index >= 0 && index < DRIVER_LED_TOTAL ) {
+ is31_led led = g_is31_leds[index];
+
+ // Subtract 0x24 to get the second index of g_pwm_buffer
+ g_pwm_buffer[led.driver][led.r - 0x24] = red;
+ g_pwm_buffer[led.driver][led.g - 0x24] = green;
+ g_pwm_buffer[led.driver][led.b - 0x24] = blue;
+ g_pwm_buffer_update_required = true;
+ }
+}
+
+void IS31_set_color_all( uint8_t red, uint8_t green, uint8_t blue )
+{
+ for ( int i = 0; i < DRIVER_LED_TOTAL; i++ )
+ {
+ IS31_set_color( i, red, green, blue );
+ }
+}
+
+void IS31_set_led_control_register( uint8_t index, bool red, bool green, bool blue )
+{
+ is31_led led = g_is31_leds[index];
+
+ uint8_t control_register_r = (led.r - 0x24) / 8;
+ uint8_t control_register_g = (led.g - 0x24) / 8;
+ uint8_t control_register_b = (led.b - 0x24) / 8;
+ uint8_t bit_r = (led.r - 0x24) % 8;
+ uint8_t bit_g = (led.g - 0x24) % 8;
+ uint8_t bit_b = (led.b - 0x24) % 8;
+
+ if ( red ) {
+ g_led_control_registers[led.driver][control_register_r] |= (1 << bit_r);
+ } else {
+ g_led_control_registers[led.driver][control_register_r] &= ~(1 << bit_r);
+ }
+ if ( green ) {
+ g_led_control_registers[led.driver][control_register_g] |= (1 << bit_g);
+ } else {
+ g_led_control_registers[led.driver][control_register_g] &= ~(1 << bit_g);
+ }
+ if ( blue ) {
+ g_led_control_registers[led.driver][control_register_b] |= (1 << bit_b);
+ } else {
+ g_led_control_registers[led.driver][control_register_b] &= ~(1 << bit_b);
+ }
+
+ g_led_control_registers_update_required = true;
+
+}
+
+void IS31_update_pwm_buffers( uint8_t addr1, uint8_t addr2 )
+{
+ if ( g_pwm_buffer_update_required )
+ {
+ IS31_write_pwm_buffer( addr1, g_pwm_buffer[0] );
+ IS31_write_pwm_buffer( addr2, g_pwm_buffer[1] );
+ }
+ g_pwm_buffer_update_required = false;
+}
+
+void IS31_update_led_control_registers( uint8_t addr1, uint8_t addr2 )
+{
+ if ( g_led_control_registers_update_required )
+ {
+ for ( int i=0; i<18; i++ )
+ {
+ IS31_write_register(addr1, i, g_led_control_registers[0][i] );
+ IS31_write_register(addr2, i, g_led_control_registers[1][i] );
+ }
+ }
+}
+
--- /dev/null
+/* Copyright 2017 Jason Williams
+ * Copyright 2018 Jack Humbert
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+#ifndef IS31FL3731_DRIVER_H
+#define IS31FL3731_DRIVER_H
+
+#include <stdint.h>
+#include <stdbool.h>
+
+typedef struct is31_led {
+ uint8_t driver:2;
+ uint8_t r;
+ uint8_t g;
+ uint8_t b;
+} __attribute__((packed)) is31_led;
+
+extern const is31_led g_is31_leds[DRIVER_LED_TOTAL];
+
+void IS31_init( uint8_t addr );
+void IS31_write_register( uint8_t addr, uint8_t reg, uint8_t data );
+void IS31_write_pwm_buffer( uint8_t addr, uint8_t *pwm_buffer );
+
+void IS31_set_color( int index, uint8_t red, uint8_t green, uint8_t blue );
+void IS31_set_color_all( uint8_t red, uint8_t green, uint8_t blue );
+
+void IS31_set_led_control_register( uint8_t index, bool red, bool green, bool blue );
+
+// This should not be called from an interrupt
+// (eg. from a timer interrupt).
+// Call this while idle (in between matrix scans).
+// If the buffer is dirty, it will update the driver with the buffer.
+void IS31_update_pwm_buffers( uint8_t addr1, uint8_t addr2 );
+void IS31_update_led_control_registers( uint8_t addr1, uint8_t addr2 );
+
+#define C1_1 0x24
+#define C1_2 0x25
+#define C1_3 0x26
+#define C1_4 0x27
+#define C1_5 0x28
+#define C1_6 0x29
+#define C1_7 0x2A
+#define C1_8 0x2B
+
+#define C1_9 0x2C
+#define C1_10 0x2D
+#define C1_11 0x2E
+#define C1_12 0x2F
+#define C1_13 0x30
+#define C1_14 0x31
+#define C1_15 0x32
+#define C1_16 0x33
+
+#define C2_1 0x34
+#define C2_2 0x35
+#define C2_3 0x36
+#define C2_4 0x37
+#define C2_5 0x38
+#define C2_6 0x39
+#define C2_7 0x3A
+#define C2_8 0x3B
+
+#define C2_9 0x3C
+#define C2_10 0x3D
+#define C2_11 0x3E
+#define C2_12 0x3F
+#define C2_13 0x40
+#define C2_14 0x41
+#define C2_15 0x42
+#define C2_16 0x43
+
+#define C3_1 0x44
+#define C3_2 0x45
+#define C3_3 0x46
+#define C3_4 0x47
+#define C3_5 0x48
+#define C3_6 0x49
+#define C3_7 0x4A
+#define C3_8 0x4B
+
+#define C3_9 0x4C
+#define C3_10 0x4D
+#define C3_11 0x4E
+#define C3_12 0x4F
+#define C3_13 0x50
+#define C3_14 0x51
+#define C3_15 0x52
+#define C3_16 0x53
+
+#define C4_1 0x54
+#define C4_2 0x55
+#define C4_3 0x56
+#define C4_4 0x57
+#define C4_5 0x58
+#define C4_6 0x59
+#define C4_7 0x5A
+#define C4_8 0x5B
+
+#define C4_9 0x5C
+#define C4_10 0x5D
+#define C4_11 0x5E
+#define C4_12 0x5F
+#define C4_13 0x60
+#define C4_14 0x61
+#define C4_15 0x62
+#define C4_16 0x63
+
+#define C5_1 0x64
+#define C5_2 0x65
+#define C5_3 0x66
+#define C5_4 0x67
+#define C5_5 0x68
+#define C5_6 0x69
+#define C5_7 0x6A
+#define C5_8 0x6B
+
+#define C5_9 0x6C
+#define C5_10 0x6D
+#define C5_11 0x6E
+#define C5_12 0x6F
+#define C5_13 0x70
+#define C5_14 0x71
+#define C5_15 0x72
+#define C5_16 0x73
+
+#define C6_1 0x74
+#define C6_2 0x75
+#define C6_3 0x76
+#define C6_4 0x77
+#define C6_5 0x78
+#define C6_6 0x79
+#define C6_7 0x7A
+#define C6_8 0x7B
+
+#define C6_9 0x7C
+#define C6_10 0x7D
+#define C6_11 0x7E
+#define C6_12 0x7F
+#define C6_13 0x80
+#define C6_14 0x81
+#define C6_15 0x82
+#define C6_16 0x83
+
+#define C7_1 0x84
+#define C7_2 0x85
+#define C7_3 0x86
+#define C7_4 0x87
+#define C7_5 0x88
+#define C7_6 0x89
+#define C7_7 0x8A
+#define C7_8 0x8B
+
+#define C7_9 0x8C
+#define C7_10 0x8D
+#define C7_11 0x8E
+#define C7_12 0x8F
+#define C7_13 0x90
+#define C7_14 0x91
+#define C7_15 0x92
+#define C7_16 0x93
+
+#define C8_1 0x94
+#define C8_2 0x95
+#define C8_3 0x96
+#define C8_4 0x97
+#define C8_5 0x98
+#define C8_6 0x99
+#define C8_7 0x9A
+#define C8_8 0x9B
+
+#define C8_9 0x9C
+#define C8_10 0x9D
+#define C8_11 0x9E
+#define C8_12 0x9F
+#define C8_13 0xA0
+#define C8_14 0xA1
+#define C8_15 0xA2
+#define C8_16 0xA3
+
+#define C9_1 0xA4
+#define C9_2 0xA5
+#define C9_3 0xA6
+#define C9_4 0xA7
+#define C9_5 0xA8
+#define C9_6 0xA9
+#define C9_7 0xAA
+#define C9_8 0xAB
+
+#define C9_9 0xAC
+#define C9_10 0xAD
+#define C9_11 0xAE
+#define C9_12 0xAF
+#define C9_13 0xB0
+#define C9_14 0xB1
+#define C9_15 0xB2
+#define C9_16 0xB3
+
+
+
+#endif // IS31FL3731_DRIVER_H
}
void rgb_matrix_update_pwm_buffers(void) {
- IS31FL3731_update_pwm_buffers( DRIVER_ADDR_1, DRIVER_ADDR_2 );
- IS31FL3731_update_led_control_registers( DRIVER_ADDR_1, DRIVER_ADDR_2 );
+ IS31_update_pwm_buffers( DRIVER_ADDR_1, DRIVER_ADDR_2 );
+ IS31_update_led_control_registers( DRIVER_ADDR_1, DRIVER_ADDR_2 );
}
void rgb_matrix_set_color( int index, uint8_t red, uint8_t green, uint8_t blue ) {
- IS31FL3731_set_color( index, red, green, blue );
+ IS31_set_color( index, red, green, blue );
}
void rgb_matrix_set_color_all( uint8_t red, uint8_t green, uint8_t blue ) {
- IS31FL3731_set_color_all( red, green, blue );
+ IS31_set_color_all( red, green, blue );
}
bool process_rgb_matrix(uint16_t keycode, keyrecord_t *record) {
void rgb_matrix_setup_drivers(void) {
// Initialize TWI
i2c_init();
- IS31FL3731_init( DRIVER_ADDR_1 );
- IS31FL3731_init( DRIVER_ADDR_2 );
+ IS31_init( DRIVER_ADDR_1 );
+ IS31_init( DRIVER_ADDR_2 );
for ( int index = 0; index < DRIVER_LED_TOTAL; index++ ) {
bool enabled = true;
// This only caches it for later
- IS31FL3731_set_led_control_register( index, enabled, enabled, enabled );
+ IS31_set_led_control_register( index, enabled, enabled, enabled );
}
// This actually updates the LED drivers
- IS31FL3731_update_led_control_registers( DRIVER_ADDR_1, DRIVER_ADDR_2 );
+ IS31_update_led_control_registers( DRIVER_ADDR_1, DRIVER_ADDR_2 );
}
// Deals with the messy details of incrementing an integer
{
if ( i == index )
{
- IS31FL3731_set_led_control_register( i, red, green, blue );
+ IS31_set_led_control_register( i, red, green, blue );
}
else
{
- IS31FL3731_set_led_control_register( i, false, false, false );
+ IS31_set_led_control_register( i, false, false, false );
}
}
}
projects / qmk_firmware.git / commitdiff