diff --git a/docs/feature_rgb_matrix.md b/docs/feature_rgb_matrix.md index fa06e46e4..cad7c50f1 100644 --- 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_` 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_` 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_` 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. @@ -184,7 +213,7 @@ Here is an example using 2 drivers. ``` !> Note the parentheses, this is so when `DRIVER_LED_TOTAL` is used in code and expanded, the values are added together before any additional math is applied to them. As an example, `rand() % (DRIVER_1_LED_TOTAL + DRIVER_2_LED_TOTAL)` will give very different results than `rand() % DRIVER_1_LED_TOTAL + DRIVER_2_LED_TOTAL`. -Currently only 2 drivers are supported, but it would be trivial to support all 4 combinations. +Currently only 2 drivers are supported, but it would be trivial to support all 4 combinations. Define these arrays listing all the LEDs in your `.c`: @@ -343,7 +372,7 @@ x = 224 / (NUMBER_OF_COLS - 1) * COL_POSITION y = 64 / (NUMBER_OF_ROWS - 1) * ROW_POSITION ``` -Where NUMBER_OF_COLS, NUMBER_OF_ROWS, COL_POSITION, & ROW_POSITION are all based on the physical layout of your keyboard, not the electrical layout. +Where NUMBER_OF_COLS, NUMBER_OF_ROWS, COL_POSITION, & ROW_POSITION are all based on the physical layout of your keyboard, not the electrical layout. As mentioned earlier, the center of the keyboard by default is expected to be `{ 112, 32 }`, but this can be changed if you want to more accurately calculate the LED's physical `{ x, y }` positions. Keyboard designers can implement `#define RGB_MATRIX_CENTER { 112, 32 }` in their config.h file with the new center point of the keyboard, or where they want it to be allowing more possibilities for the `{ x, y }` values. Do note that the maximum value for x or y is 255, and the recommended maximum is 224 as this gives animations runoff room before they reset. @@ -386,7 +415,7 @@ All RGB keycodes are currently shared with the RGBLIGHT system: * `RGB_MODE_*` keycodes will generally work, but not all of the modes are currently mapped to the correct effects for the RGB Matrix system. -`RGB_MODE_PLAIN`, `RGB_MODE_BREATHE`, `RGB_MODE_RAINBOW`, and `RGB_MATRIX_SWIRL` are the only ones that are mapped properly. The rest don't have a direct equivalent, and are not mapped. +`RGB_MODE_PLAIN`, `RGB_MODE_BREATHE`, `RGB_MODE_RAINBOW`, and `RGB_MATRIX_SWIRL` are the only ones that are mapped properly. The rest don't have a direct equivalent, and are not mapped. !> By default, if you have both the [RGB Light](feature_rgblight.md) and the RGB Matrix feature enabled, these keycodes will work for both features, at the same time. You can disable the keycode functionality by defining the `*_DISABLE_KEYCODES` option for the specific feature. @@ -423,7 +452,7 @@ enum rgb_matrix_effects { RGB_MATRIX_JELLYBEAN_RAINDROPS, // Randomly changes a single key's hue and saturation RGB_MATRIX_HUE_BREATHING, // Hue shifts up a slight ammount at the same time, then shifts back RGB_MATRIX_HUE_PENDULUM, // Hue shifts up a slight ammount in a wave to the right, then back to the left - RGB_MATRIX_HUE_WAVE, // Hue shifts up a slight ammount and then back down in a wave to the right + RGB_MATRIX_HUE_WAVE, // Hue shifts up a slight ammount and then back down in a wave to the right RGB_MATRIX_FRACTAL, // Single hue fractal filled keys pulsing horizontally out to edges #if define(RGB_MATRIX_FRAMEBUFFER_EFFECTS) RGB_MATRIX_TYPING_HEATMAP, // How hot is your WPM! @@ -698,7 +727,7 @@ Where `28` is an unused index from `eeconfig.h`. ### Indicators :id=indicators -If you want to set custom indicators, such as an LED for Caps Lock, or layer indication, you can use the `rgb_matrix_indicators_kb` or `rgb_matrix_indicators_user` function for that: +If you want to set custom indicators, such as an LED for Caps Lock, or layer indication, you can use the `rgb_matrix_indicators_kb` or `rgb_matrix_indicators_user` function for that: ```c void rgb_matrix_indicators_kb(void) { rgb_matrix_set_color(index, red, green, blue); @@ -753,18 +782,18 @@ This example sets the modifiers to be a specific color based on the layer state. ```c void rgb_matrix_indicators_advanced_user(uint8_t led_min, uint8_t led_max) { HSV hsv = {0, 255, 255}; - + if (layer_state_is(layer_state, 2)) { hsv = {130, 255, 255}; } else { hsv = {30, 255, 255}; } - + if (hsv.v > rgb_matrix_get_val()) { hsv.v = rgb_matrix_get_val(); } RGB rgb = hsv_to_rgb(hsv); - + for (uint8_t i = led_min; i <= led_max; i++) { if (HAS_FLAGS(g_led_config.flags[i], 0x01)) { // 0x01 == LED_FLAG_MODIFIER rgb_matrix_set_color(i, rgb.r, rgb.g, rgb.b); @@ -773,7 +802,7 @@ void rgb_matrix_indicators_advanced_user(uint8_t led_min, uint8_t led_max) { } ``` -If you want to indicate a Host LED status (caps lock, num lock, etc), you can use something like this to light up the caps lock key: +If you want to indicate a Host LED status (caps lock, num lock, etc), you can use something like this to light up the caps lock key: ```c void rgb_matrix_indicators_advanced_user(uint8_t led_min, uint8_t led_max) { diff --git a/drivers/led/issi/is31fl3731-simple.c b/drivers/led/issi/is31fl3731-simple.c index d295772f5..9d28ea91d 100644 --- 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); diff --git a/drivers/led/issi/is31fl3731.c b/drivers/led/issi/is31fl3731.c index 110bdc1be..fbf24c30f 100644 --- 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); diff --git a/drivers/led/issi/is31fl3733.c b/drivers/led/issi/is31fl3733.c index 4ddd827ca..c64d03513 100644 --- 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. diff --git a/drivers/led/issi/is31fl3733.h b/drivers/led/issi/is31fl3733.h index 64fd38eb1..daa226b41 100644 --- 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 diff --git a/drivers/led/issi/is31fl3736.c b/drivers/led/issi/is31fl3736.c index 7dece1b1e..dcaabba2e 100644 --- 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. diff --git a/drivers/led/issi/is31fl3736.h b/drivers/led/issi/is31fl3736.h index c956c87f7..a30be9055 100644 --- 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 diff --git a/drivers/led/issi/is31fl3737.c b/drivers/led/issi/is31fl3737.c index 0bb4ddd42..62862e0d4 100644 --- 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. diff --git a/drivers/led/issi/is31fl3737.h b/drivers/led/issi/is31fl3737.h index 06886e9c9..97917f1d4 100644 --- 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 diff --git a/drivers/led/issi/is31fl3741.c b/drivers/led/issi/is31fl3741.c index 24a273514..5084f3b9f 100644 --- 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); diff --git a/drivers/led/issi/is31fl3741.h b/drivers/led/issi/is31fl3741.h index 163a03523..563022b9b 100644 --- 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