Enable de-ghosting for RGB/LED matrix on all ISSI LED drivers (#14508)

* Initial work for de-ghost enable * Dumb mistake with the redefine * Added Copywrite stuff on source files * Fixed whitespace errors * Added support for all ISSI LED drivers * Updated docs for support for ISSI LED driver pull-up pull-down * Applied clang format * Added 'boolean' flag to enable de-ghosting for the is31fl3731 IC * Fixed some of the grammer in the docs * Fixed comment placement and grammer of comment * Fixed whitespace errors from lint Co-authored-by: donicrosby <donicrosby1995@gmail.com>
2021-11-01 19:40:01 -04:00 · 2021-11-01 19:40:01 -04:00 · 0c72501763
parent 7ae0f371cf
commit 0c72501763
11 changed files with 136 additions and 10 deletions
--- a/docs/feature_rgb_matrix.md
+++ b/docs/feature_rgb_matrix.md
@ -21,6 +21,7 @@ You can use between 1 and 4 IS31FL3731 IC's. Do not specify `DRIVER_ADDR_<N>` de
 |----------|-------------|---------|
 | `ISSI_TIMEOUT` | (Optional) How long to wait for i2c messages, in milliseconds | 100 |
 | `ISSI_PERSISTENCE` | (Optional) Retry failed messages this many times | 0 |
+| `ISSI_3731_DEGHOST` | (Optional) Set this define to enable de-ghosting by halving Vcc during blanking time | |
 | `DRIVER_COUNT` | (Required) How many RGB driver IC's are present | |
 | `DRIVER_LED_TOTAL` | (Required) How many RGB lights are present across all drivers | |
 | `DRIVER_ADDR_1` | (Required) Address for the first RGB driver | |
@ -85,6 +86,8 @@ You can use between 1 and 4 IS31FL3733 IC's. Do not specify `DRIVER_ADDR_<N>` de
 | `ISSI_TIMEOUT` | (Optional) How long to wait for i2c messages, in milliseconds | 100 |
 | `ISSI_PERSISTENCE` | (Optional) Retry failed messages this many times | 0 |
 | `ISSI_PWM_FREQUENCY` | (Optional) PWM Frequency Setting - IS31FL3733B only | 0 |
+| `ISSI_SWPULLUP` | (Optional) Set the value of the SWx lines on-chip de-ghosting resistors | PUR_0R (Disabled) |
+| `ISSI_CSPULLUP` | (Optional) Set the value of the CSx lines on-chip de-ghosting resistors | PUR_0R (Disabled) |
 | `DRIVER_COUNT` | (Required) How many RGB driver IC's are present | |
 | `DRIVER_LED_TOTAL` | (Required) How many RGB lights are present across all drivers | |
 | `DRIVER_ADDR_1` | (Required) Address for the first RGB driver | |
@ -96,6 +99,18 @@ You can use between 1 and 4 IS31FL3733 IC's. Do not specify `DRIVER_ADDR_<N>` de
 | `DRIVER_SYNC_3` | (Optional) Sync configuration for the third RGB driver | 0 |
 | `DRIVER_SYNC_4` | (Optional) Sync configuration for the fourth RGB driver | 0 |

+The IS31FL3733 IC's have on-chip resistors that can be enabled to allow for de-ghosting of the RGB matrix. By default these resistors are not enabled (`ISSI_SWPULLUP`/`ISSI_CSPULLUP` are given the value of`PUR_0R`), the values that can be set to enable de-ghosting are as follows:
+
+| `ISSI_SWPULLUP/ISSI_CSPULLUP` | Description |
+|----------------------|-------------|
+| `PUR_0R` | (default) Do not use the on-chip resistors/enable de-ghosting |
+| `PUR_05KR` | The 0.5k Ohm resistor used during blanking period (t_NOL) |
+| `PUR_3KR` | The 3k Ohm resistor used at all times |
+| `PUR_4KR` | The 4k Ohm resistor used at all times |
+| `PUR_8KR` | The 8k Ohm resistor used at all times |
+| `PUR_16KR` | The 16k Ohm resistor used at all times |
+| `PUR_32KR` | The 32k Ohm resistor used during blanking period (t_NOL) |
+
 Here is an example using 2 drivers.

 ```c
@ -156,11 +171,25 @@ Configure the hardware via your `config.h`:
 |----------|-------------|---------|
 | `ISSI_TIMEOUT` | (Optional) How long to wait for i2c messages, in milliseconds | 100 |
 | `ISSI_PERSISTENCE` | (Optional) Retry failed messages this many times | 0 |
+| `ISSI_SWPULLUP` | (Optional) Set the value of the SWx lines on-chip de-ghosting resistors | PUR_0R (Disabled) |
+| `ISSI_CSPULLUP` | (Optional) Set the value of the CSx lines on-chip de-ghosting resistors | PUR_0R (Disabled) |
 | `DRIVER_COUNT` | (Required) How many RGB driver IC's are present | |
 | `DRIVER_LED_TOTAL` | (Required) How many RGB lights are present across all drivers | |
 | `DRIVER_ADDR_1` | (Required) Address for the first RGB driver | |
 | `DRIVER_ADDR_2` | (Optional) Address for the second RGB driver | |

+The IS31FL3737 IC's have on-chip resistors that can be enabled to allow for de-ghosting of the RGB matrix. By default these resistors are not enabled (`ISSI_SWPULLUP`/`ISSI_CSPULLUP` are given the value of`PUR_0R`), the values that can be set to enable de-ghosting are as follows:
+
+| `ISSI_SWPULLUP/ISSI_CSPULLUP` | Description |
+|----------------------|-------------|
+| `PUR_0R` | (default) Do not use the on-chip resistors/enable de-ghosting |
+| `PUR_05KR` | The 0.5k Ohm resistor used during blanking period (t_NOL) |
+| `PUR_1KR` | The 1k Ohm resistor used during blanking period (t_NOL) |
+| `PUR_2KR` | The 2k Ohm resistor used during blanking period (t_NOL) |
+| `PUR_4KR` | The 4k Ohm resistor used during blanking period (t_NOL) |
+| `PUR_8KR` | The 8k Ohm resistor during blanking period (t_NOL) |
+| `PUR_16KR` | The 16k Ohm resistor during blanking period (t_NOL) |
+| `PUR_32KR` | The 32k Ohm resistor used during blanking period (t_NOL) |

 Here is an example using 2 drivers.

--- a/drivers/led/issi/is31fl3731-simple.c
+++ b/drivers/led/issi/is31fl3731-simple.c
@ -1,6 +1,7 @@
 /* Copyright 2017 Jason Williams
 * Copyright 2018 Jack Humbert
 * Copyright 2019 Clueboard
+ * 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
@ -40,6 +41,9 @@

 #define ISSI_REG_PICTUREFRAME 0x01

+// Not defined in the datasheet -- See AN for IC
+#define ISSI_REG_GHOST_IMAGE_PREVENTION 0xC2  // Set bit 4 to enable de-ghosting
+
 #define ISSI_REG_SHUTDOWN 0x0A
 #define ISSI_REG_AUDIOSYNC 0x06

@ -144,6 +148,9 @@ void IS31FL3731_init(uint8_t addr) {

    // enable software shutdown
    IS31FL3731_write_register(addr, ISSI_REG_SHUTDOWN, 0x00);
+#ifdef ISSI_3731_DEGHOST  // set to enable de-ghosting of the array
+    IS31FL3731_write_register(addr, ISSI_REG_GHOST_IMAGE_PREVENTION, 0x10);
+#endif

    // this delay was copied from other drivers, might not be needed
    wait_ms(10);
--- a/drivers/led/issi/is31fl3731.c
+++ b/drivers/led/issi/is31fl3731.c
@ -1,5 +1,6 @@
 /* Copyright 2017 Jason Williams
 * Copyright 2018 Jack Humbert
+ * 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
@ -39,6 +40,9 @@

 #define ISSI_REG_PICTUREFRAME 0x01

+// Not defined in the datasheet -- See AN for IC
+#define ISSI_REG_GHOST_IMAGE_PREVENTION 0xC2  // Set bit 4 to enable de-ghosting
+
 #define ISSI_REG_SHUTDOWN 0x0A
 #define ISSI_REG_AUDIOSYNC 0x06

@ -132,6 +136,9 @@ void IS31FL3731_init(uint8_t addr) {

    // enable software shutdown
    IS31FL3731_write_register(addr, ISSI_REG_SHUTDOWN, 0x00);
+#ifdef ISSI_3731_DEGHOST  // set to enable de-ghosting of the array
+    IS31FL3731_write_register(addr, ISSI_REG_GHOST_IMAGE_PREVENTION, 0x10);
+#endif

    // this delay was copied from other drivers, might not be needed
    wait_ms(10);
--- a/drivers/led/issi/is31fl3733.c
+++ b/drivers/led/issi/is31fl3733.c
@ -1,6 +1,7 @@
 /* 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
@ -58,6 +59,12 @@

 #ifndef ISSI_PWM_FREQUENCY
 #    define ISSI_PWM_FREQUENCY 0b000  // PFS - IS31FL3733B only
+#ifndef ISSI_SWPULLUP
+#    define ISSI_SWPULLUP PUR_0R
+#endif
+
+#ifndef ISSI_CSPULLUP
+#    define ISSI_CSPULLUP PUR_0R
 #endif

 // Transfer buffer for TWITransmitData()
@ -158,6 +165,10 @@ void IS31FL3733_init(uint8_t addr, uint8_t sync) {

    // Select PG3
    IS31FL3733_write_register(addr, ISSI_COMMANDREGISTER, ISSI_PAGE_FUNCTION);
+    // Set de-ghost pull-up resistors (SWx)
+    IS31FL3733_write_register(addr, ISSI_REG_SWPULLUP, ISSI_SWPULLUP);
+    // Set de-ghost pull-down resistors (CSx)
+    IS31FL3733_write_register(addr, ISSI_REG_CSPULLUP, ISSI_CSPULLUP);
    // Set global current to maximum.
    IS31FL3733_write_register(addr, ISSI_REG_GLOBALCURRENT, 0xFF);
    // Disable software shutdown.
--- a/drivers/led/issi/is31fl3733.h
+++ b/drivers/led/issi/is31fl3733.h
@ -1,6 +1,7 @@
 /* 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
@ -47,6 +48,14 @@ void IS31FL3733_set_led_control_register(uint8_t index, bool red, bool green, bo
 void IS31FL3733_update_pwm_buffers(uint8_t addr, uint8_t index);
 void IS31FL3733_update_led_control_registers(uint8_t addr, uint8_t index);

+#define PUR_0R 0x00    // No PUR resistor
+#define PUR_05KR 0x02  // 0.5k Ohm resistor in t_NOL
+#define PUR_3KR 0x03   // 3.0k Ohm resistor on all the time
+#define PUR_4KR 0x04   // 4.0k Ohm resistor on all the time
+#define PUR_8KR 0x05   // 8.0k Ohm resistor on all the time
+#define PUR_16KR 0x06  // 16k Ohm resistor on all the time
+#define PUR_32KR 0x07  // 32k Ohm resistor in t_NOL
+
 #define A_1 0x00
 #define A_2 0x01
 #define A_3 0x02
--- a/drivers/led/issi/is31fl3736.c
+++ b/drivers/led/issi/is31fl3736.c
@ -1,4 +1,5 @@
 /* Copyright 2018 Jason Williams (Wilba)
+ * 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
@ -54,6 +55,14 @@
 #    define ISSI_PERSISTENCE 0
 #endif

+#ifndef ISSI_SWPULLUP
+#    define ISSI_SWPULLUP PUR_0R
+#endif
+
+#ifndef ISSI_CSPULLUP
+#    define ISSI_CSPULLUP PUR_0R
+#endif
+
 // Transfer buffer for TWITransmitData()
 uint8_t g_twi_transfer_buffer[20];

@ -140,6 +149,10 @@ void IS31FL3736_init(uint8_t addr) {

    // Select PG3
    IS31FL3736_write_register(addr, ISSI_COMMANDREGISTER, ISSI_PAGE_FUNCTION);
+    // Set de-ghost pull-up resistors (SWx)
+    IS31FL3736_write_register(addr, ISSI_REG_SWPULLUP, ISSI_SWPULLUP);
+    // Set de-ghost pull-down resistors (CSx)
+    IS31FL3736_write_register(addr, ISSI_REG_CSPULLUP, ISSI_CSPULLUP);
    // Set global current to maximum.
    IS31FL3736_write_register(addr, ISSI_REG_GLOBALCURRENT, 0xFF);
    // Disable software shutdown.
--- a/drivers/led/issi/is31fl3736.h
+++ b/drivers/led/issi/is31fl3736.h
@ -1,4 +1,5 @@
 /* Copyright 2018 Jason Williams (Wilba)
+ * 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
@ -60,6 +61,15 @@ void IS31FL3736_mono_set_led_control_register(uint8_t index, bool enabled);
 void IS31FL3736_update_pwm_buffers(uint8_t addr1, uint8_t addr2);
 void IS31FL3736_update_led_control_registers(uint8_t addr1, uint8_t addr2);

+#define PUR_0R 0x00    // No PUR resistor
+#define PUR_05KR 0x01  // 0.5k Ohm resistor
+#define PUR_1KR 0x02   // 1.0k Ohm resistor
+#define PUR_2KR 0x03   // 2.0k Ohm resistor
+#define PUR_4KR 0x04   // 4.0k Ohm resistor
+#define PUR_8KR 0x05   // 8.0k Ohm resistor
+#define PUR_16KR 0x06  // 16k Ohm resistor
+#define PUR_32KR 0x07  // 32k Ohm resistor
+
 #define A_1 0x00
 #define A_2 0x02
 #define A_3 0x04
--- a/drivers/led/issi/is31fl3737.c
+++ b/drivers/led/issi/is31fl3737.c
@ -1,6 +1,7 @@
 /* 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
@ -56,6 +57,14 @@
 #    define ISSI_PERSISTENCE 0
 #endif

+#ifndef ISSI_SWPULLUP
+#    define ISSI_SWPULLUP PUR_0R
+#endif
+
+#ifndef ISSI_CSPULLUP
+#    define ISSI_CSPULLUP PUR_0R
+#endif
+
 // Transfer buffer for TWITransmitData()
 uint8_t g_twi_transfer_buffer[20];

@ -143,6 +152,10 @@ void IS31FL3737_init(uint8_t addr) {

    // Select PG3
    IS31FL3737_write_register(addr, ISSI_COMMANDREGISTER, ISSI_PAGE_FUNCTION);
+    // Set de-ghost pull-up resistors (SWx)
+    IS31FL3737_write_register(addr, ISSI_REG_SWPULLUP, ISSI_SWPULLUP);
+    // Set de-ghost pull-down resistors (CSx)
+    IS31FL3737_write_register(addr, ISSI_REG_CSPULLUP, ISSI_CSPULLUP);
    // Set global current to maximum.
    IS31FL3737_write_register(addr, ISSI_REG_GLOBALCURRENT, 0xFF);
    // Disable software shutdown.
--- a/drivers/led/issi/is31fl3737.h
+++ b/drivers/led/issi/is31fl3737.h
@ -1,6 +1,7 @@
 /* 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
@ -47,6 +48,15 @@ void IS31FL3737_set_led_control_register(uint8_t index, bool red, bool green, bo
 void IS31FL3737_update_pwm_buffers(uint8_t addr1, uint8_t addr2);
 void IS31FL3737_update_led_control_registers(uint8_t addr1, uint8_t addr2);

+#define PUR_0R 0x00    // No PUR resistor
+#define PUR_05KR 0x01  // 0.5k Ohm resistor in t_NOL
+#define PUR_1KR 0x02   // 1.0k Ohm resistor in t_NOL
+#define PUR_2KR 0x03   // 2.0k Ohm resistor in t_NOL
+#define PUR_4KR 0x04   // 4.0k Ohm resistor in t_NOL
+#define PUR_8KR 0x05   // 8.0k Ohm resistor in t_NOL
+#define PUR_16KR 0x06  // 16k Ohm resistor in t_NOL
+#define PUR_32KR 0x07  // 32k Ohm resistor in t_NOL
+
 #define A_1 0x00
 #define A_2 0x01
 #define A_3 0x02
--- a/drivers/led/issi/is31fl3741.c
+++ b/drivers/led/issi/is31fl3741.c
@ -61,6 +61,14 @@
 #    define ISSI_PERSISTENCE 0
 #endif

+#ifndef ISSI_SWPULLUP
+#    define ISSI_SWPULLUP PUR_32KR
+#endif
+
+#ifndef ISSI_CSPULLUP
+#    define ISSI_CSPULLUP PUR_32KR
+#endif
+
 #define ISSI_MAX_LEDS 351

 // Transfer buffer for TWITransmitData()
@ -157,7 +165,7 @@ void IS31FL3741_init(uint8_t addr) {
    // Set Golbal Current Control Register
    IS31FL3741_write_register(addr, ISSI_REG_GLOBALCURRENT, 0xFF);
    // Set Pull up & Down for SWx CSy
-    IS31FL3741_write_register(addr, ISSI_REG_PULLDOWNUP, 0x77);
+    IS31FL3741_write_register(addr, ISSI_REG_PULLDOWNUP, ((ISSI_CSPULLUP << 4) | ISSI_SWPULLUP));

    // IS31FL3741_update_led_scaling_registers(addr, 0xFF, 0xFF, 0xFF);

--- a/drivers/led/issi/is31fl3741.h
+++ b/drivers/led/issi/is31fl3741.h
@ -51,6 +51,15 @@ void IS31FL3741_set_scaling_registers(const is31_led *pled, uint8_t red, uint8_t

 void IS31FL3741_set_pwm_buffer(const is31_led *pled, uint8_t red, uint8_t green, uint8_t blue);

+#define PUR_0R 0x00    // No PUR resistor
+#define PUR_05KR 0x01  // 0.5k Ohm resistor
+#define PUR_1KR 0x02   // 1.0k Ohm resistor
+#define PUR_2KR 0x03   // 2.0k Ohm resistor
+#define PUR_4KR 0x04   // 4.0k Ohm resistor
+#define PUR_8KR 0x05   // 8.0k Ohm resistor
+#define PUR_16KR 0x06  // 16k Ohm resistor
+#define PUR_32KR 0x07  // 32k Ohm resistor
+
 #define CS1_SW1 0x00
 #define CS2_SW1 0x01
 #define CS3_SW1 0x02