is31fl3737/3741: add LED Matrix support

builddefs/common_features.mk

@@ -354,8 +354,7 @@ LED_MATRIX_DRIVER := aw20216s
 endif
 
 LED_MATRIX_ENABLE ?= no
-VALID_LED_MATRIX_TYPES := is31fl3218 is31fl3731 is31fl3733 is31fl3736 is31fl3742a is31fl3743a is31fl3745 is31fl3746a ckled2001 custom
-# TODO: is31fl3737 is31fl3741
+VALID_LED_MATRIX_TYPES := is31fl3218 is31fl3731 is31fl3733 is31fl3736 is31fl3737 is31fl3741 is31fl3742a is31fl3743a is31fl3745 is31fl3746a ckled2001 custom
 
 ifeq ($(strip $(LED_MATRIX_ENABLE)), yes)
     ifeq ($(filter $(LED_MATRIX_DRIVER),$(VALID_LED_MATRIX_TYPES)),)
@@ -405,6 +404,20 @@ endif
         QUANTUM_LIB_SRC += i2c_master.c
     endif
 
+    ifeq ($(strip $(LED_MATRIX_DRIVER)), is31fl3737)
+        OPT_DEFS += -DHAL_USE_I2C=TRUE
+        COMMON_VPATH += $(DRIVER_PATH)/led/issi
+        SRC += is31fl3737-simple.c
+        QUANTUM_LIB_SRC += i2c_master.c
+    endif
+
+    ifeq ($(strip $(LED_MATRIX_DRIVER)), is31fl3741)
+        OPT_DEFS += -DHAL_USE_I2C=TRUE
+        COMMON_VPATH += $(DRIVER_PATH)/led/issi
+        SRC += is31fl3741-simple.c
+        QUANTUM_LIB_SRC += i2c_master.c
+    endif
+
     ifeq ($(strip $(LED_MATRIX_DRIVER)), is31fl3742a)
         OPT_DEFS += -DIS31FLCOMMON -DHAL_USE_I2C=TRUE
         COMMON_VPATH += $(DRIVER_PATH)/led/issi

docs/reference_info_json.md

@@ -329,7 +329,7 @@ Configures the [LED Matrix](feature_led_matrix.md) feature.
         * The centroid (geometric center) of the LEDs. Used for certain effects.
         * Default: `[112, 32]`
     * `driver` (Required)
-        * The driver to use. Must be one of `ckled2001`, `custom`, `is31fl3218`, `is31fl3731`, `is31fl3733`, `is31fl3736`, `is31fl3742a`, `is31fl3743a`, `is31fl3745`, `is31fl3746a`.
+        * The driver to use. Must be one of `ckled2001`, `custom`, `is31fl3218`, `is31fl3731`, `is31fl3733`, `is31fl3736`, `is31fl3737`, `is31fl3741`, `is31fl3742a`, `is31fl3743a`, `is31fl3745`, `is31fl3746a`.
     * `layout` (Required)
         * List of LED configuration dictionaries. Each dictionary contains:
             * `flags` (Required)

drivers/led/issi/is31fl3737-simple.c

@@ -0,0 +1,219 @@
+/* Copyright 2017 Jason Williams
+ * Copyright 2018 Jack Humbert
+ * Copyright 2018 Yiancar
+ * Copyright 2021 Doni Crosby
+ *
+ * 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 "is31fl3737-simple.h"
+#include <string.h>
+#include "i2c_master.h"
+#include "wait.h"
+
+#define IS31FL3737_COMMANDREGISTER 0xFD
+#define IS31FL3737_COMMANDREGISTER_WRITELOCK 0xFE
+#define IS31FL3737_INTERRUPTMASKREGISTER 0xF0
+#define IS31FL3737_INTERRUPTSTATUSREGISTER 0xF1
+
+#define IS31FL3737_PAGE_LEDCONTROL 0x00 // PG0
+#define IS31FL3737_PAGE_PWM 0x01        // PG1
+#define IS31FL3737_PAGE_AUTOBREATH 0x02 // PG2
+#define IS31FL3737_PAGE_FUNCTION 0x03   // PG3
+
+#define IS31FL3737_REG_CONFIGURATION 0x00 // PG3
+#define IS31FL3737_REG_GLOBALCURRENT 0x01 // PG3
+#define IS31FL3737_REG_RESET 0x11         // PG3
+#define IS31FL3737_REG_SWPULLUP 0x0F      // PG3
+#define IS31FL3737_REG_CSPULLUP 0x10      // PG3
+
+#ifndef IS31FL3737_I2C_TIMEOUT
+#    define IS31FL3737_I2C_TIMEOUT 100
+#endif
+
+#ifndef IS31FL3737_I2C_PERSISTENCE
+#    define IS31FL3737_I2C_PERSISTENCE 0
+#endif
+
+#ifndef IS31FL3737_PWM_FREQUENCY
+#    define IS31FL3737_PWM_FREQUENCY IS31FL3737_PWM_FREQUENCY_8K4_HZ // PFS - IS31FL3737B only
+#endif
+
+#ifndef IS31FL3737_SWPULLUP
+#    define IS31FL3737_SWPULLUP IS31FL3737_PUR_0R
+#endif
+
+#ifndef IS31FL3737_CSPULLUP
+#    define IS31FL3737_CSPULLUP IS31FL3737_PUR_0R
+#endif
+
+#ifndef IS31FL3737_GLOBALCURRENT
+#    define IS31FL3737_GLOBALCURRENT 0xFF
+#endif
+
+// Transfer buffer for TWITransmitData()
+uint8_t g_twi_transfer_buffer[20];
+
+// These buffers match the IS31FL3737 PWM registers.
+// The control buffers match the PG0 LED On/Off registers.
+// 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 is31fl3737_write_pwm_buffer() but it's
+// probably not worth the extra complexity.
+
+uint8_t g_pwm_buffer[IS31FL3737_DRIVER_COUNT][192];
+bool    g_pwm_buffer_update_required[IS31FL3737_DRIVER_COUNT] = {false};
+
+uint8_t g_led_control_registers[IS31FL3737_DRIVER_COUNT][24]             = {0};
+bool    g_led_control_registers_update_required[IS31FL3737_DRIVER_COUNT] = {false};
+
+void is31fl3737_write_register(uint8_t addr, uint8_t reg, uint8_t data) {
+    g_twi_transfer_buffer[0] = reg;
+    g_twi_transfer_buffer[1] = data;
+
+#if IS31FL3737_I2C_PERSISTENCE > 0
+    for (uint8_t i = 0; i < IS31FL3737_I2C_PERSISTENCE; i++) {
+        if (i2c_transmit(addr << 1, g_twi_transfer_buffer, 2, IS31FL3737_I2C_TIMEOUT) == 0) break;
+    }
+#else
+    i2c_transmit(addr << 1, g_twi_transfer_buffer, 2, IS31FL3737_I2C_TIMEOUT);
+#endif
+}
+
+void is31fl3737_write_pwm_buffer(uint8_t addr, uint8_t *pwm_buffer) {
+    // assumes PG1 is already selected
+
+    // transmit PWM registers in 12 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 < 192; i += 16) {
+        g_twi_transfer_buffer[0] = i;
+        // copy the data from i to i+15
+        // device will auto-increment register for data after the first byte
+        // thus this sets registers 0x00-0x0F, 0x10-0x1F, etc. in one transfer
+        memcpy(g_twi_transfer_buffer + 1, pwm_buffer + i, 16);
+
+#if IS31FL3737_I2C_PERSISTENCE > 0
+        for (uint8_t i = 0; i < IS31FL3737_I2C_PERSISTENCE; i++) {
+            if (i2c_transmit(addr << 1, g_twi_transfer_buffer, 17, IS31FL3737_I2C_TIMEOUT) == 0) break;
+        }
+#else
+        i2c_transmit(addr << 1, g_twi_transfer_buffer, 17, IS31FL3737_I2C_TIMEOUT);
+#endif
+    }
+}
+
+void is31fl3737_init(uint8_t addr) {
+    // In order to avoid the LEDs being driven with garbage data
+    // in the LED driver's PWM registers, shutdown is enabled last.
+    // Set up the mode and other settings, clear the PWM registers,
+    // then disable software shutdown.
+
+    // Unlock the command register.
+    is31fl3737_write_register(addr, IS31FL3737_COMMANDREGISTER_WRITELOCK, 0xC5);
+
+    // Select PG0
+    is31fl3737_write_register(addr, IS31FL3737_COMMANDREGISTER, IS31FL3737_PAGE_LEDCONTROL);
+    // Turn off all LEDs.
+    for (int i = 0x00; i <= 0x17; i++) {
+        is31fl3737_write_register(addr, i, 0x00);
+    }
+
+    // Unlock the command register.
+    is31fl3737_write_register(addr, IS31FL3737_COMMANDREGISTER_WRITELOCK, 0xC5);
+
+    // Select PG1
+    is31fl3737_write_register(addr, IS31FL3737_COMMANDREGISTER, IS31FL3737_PAGE_PWM);
+    // Set PWM on all LEDs to 0
+    // No need to setup Breath registers to PWM as that is the default.
+    for (int i = 0x00; i <= 0xBF; i++) {
+        is31fl3737_write_register(addr, i, 0x00);
+    }
+
+    // Unlock the command register.
+    is31fl3737_write_register(addr, IS31FL3737_COMMANDREGISTER_WRITELOCK, 0xC5);
+
+    // Select PG3
+    is31fl3737_write_register(addr, IS31FL3737_COMMANDREGISTER, IS31FL3737_PAGE_FUNCTION);
+    // Set de-ghost pull-up resistors (SWx)
+    is31fl3737_write_register(addr, IS31FL3737_REG_SWPULLUP, IS31FL3737_SWPULLUP);
+    // Set de-ghost pull-down resistors (CSx)
+    is31fl3737_write_register(addr, IS31FL3737_REG_CSPULLUP, IS31FL3737_CSPULLUP);
+    // Set global current to maximum.
+    is31fl3737_write_register(addr, IS31FL3737_REG_GLOBALCURRENT, IS31FL3737_GLOBALCURRENT);
+    // Disable software shutdown.
+    is31fl3737_write_register(addr, IS31FL3737_REG_CONFIGURATION, ((IS31FL3737_PWM_FREQUENCY & 0b111) << 3) | 0x01);
+
+    // Wait 10ms to ensure the device has woken up.
+    wait_ms(10);
+}
+
+void is31fl3737_set_value(int index, uint8_t value) {
+    is31_led led;
+    if (index >= 0 && index < LED_MATRIX_LED_COUNT) {
+        memcpy_P(&led, (&g_is31_leds[index]), sizeof(led));
+
+        if (g_pwm_buffer[led.driver][led.v] == value) {
+            return;
+        }
+        g_pwm_buffer[led.driver][led.v]          = value;
+        g_pwm_buffer_update_required[led.driver] = true;
+    }
+}
+
+void is31fl3737_set_value_all(uint8_t value) {
+    for (int i = 0; i < LED_MATRIX_LED_COUNT; i++) {
+        is31fl3737_set_value(i, value);
+    }
+}
+
+void is31fl3737_set_led_control_register(uint8_t index, bool value) {
+    is31_led led;
+    memcpy_P(&led, (&g_is31_leds[index]), sizeof(led));
+
+    uint8_t control_register = led.v / 8;
+    uint8_t bit_value        = led.v % 8;
+
+    if (value) {
+        g_led_control_registers[led.driver][control_register] |= (1 << bit_value);
+    } else {
+        g_led_control_registers[led.driver][control_register] &= ~(1 << bit_value);
+    }
+
+    g_led_control_registers_update_required[led.driver] = true;
+}
+
+void is31fl3737_update_pwm_buffers(uint8_t addr, uint8_t index) {
+    if (g_pwm_buffer_update_required[index]) {
+        // Firstly we need to unlock the command register and select PG1
+        is31fl3737_write_register(addr, IS31FL3737_COMMANDREGISTER_WRITELOCK, 0xC5);
+        is31fl3737_write_register(addr, IS31FL3737_COMMANDREGISTER, IS31FL3737_PAGE_PWM);
+
+        is31fl3737_write_pwm_buffer(addr, g_pwm_buffer[index]);
+        g_pwm_buffer_update_required[index] = false;
+    }
+}
+
+void is31fl3737_update_led_control_registers(uint8_t addr, uint8_t index) {
+    if (g_led_control_registers_update_required[index]) {
+        // Firstly we need to unlock the command register and select PG0
+        is31fl3737_write_register(addr, IS31FL3737_COMMANDREGISTER_WRITELOCK, 0xC5);
+        is31fl3737_write_register(addr, IS31FL3737_COMMANDREGISTER, IS31FL3737_PAGE_LEDCONTROL);
+        for (int i = 0; i < 24; i++) {
+            is31fl3737_write_register(addr, i, g_led_control_registers[index][i]);
+        }
+        g_led_control_registers_update_required[index] = false;
+    }
+}