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Diffstat (limited to 'docs/feature_led_matrix.md')
| -rw-r--r-- | docs/feature_led_matrix.md | 31 |
1 files changed, 21 insertions, 10 deletions
diff --git a/docs/feature_led_matrix.md b/docs/feature_led_matrix.md index 7834b940d5..e56caabfe7 100644 --- a/docs/feature_led_matrix.md +++ b/docs/feature_led_matrix.md @@ -15,7 +15,20 @@ LED_MATRIX_ENABLE = yes LED_MATRIX_DRIVER = IS31FL3731 ``` -Configure the hardware via your `config.h`: +You can use between 1 and 4 IS31FL3731 IC's. Do not specify `LED_DRIVER_ADDR_<N>` defines for IC's that are not present on your keyboard. You can define the following items in `config.h`: + +| Variable | Description | Default | +|----------|-------------|---------| +| `ISSI_TIMEOUT` | (Optional) How long to wait for i2c messages, in milliseconds | 100 | +| `ISSI_PERSISTENCE` | (Optional) Retry failed messages this many times | 0 | +| `LED_DRIVER_COUNT` | (Required) How many LED driver IC's are present | | +| `DRIVER_LED_TOTAL` | (Required) How many LED lights are present across all drivers | | +| `LED_DRIVER_ADDR_1` | (Required) Address for the first LED driver | | +| `LED_DRIVER_ADDR_2` | (Optional) Address for the second LED driver | | +| `LED_DRIVER_ADDR_3` | (Optional) Address for the third LED driver | | +| `LED_DRIVER_ADDR_4` | (Optional) Address for the fourth LED driver | | + +Here is an example using 2 drivers. ```c // This is a 7-bit address, that gets left-shifted and bit 0 @@ -25,18 +38,16 @@ Configure the hardware via your `config.h`: // 0b1110111 AD <-> VCC // 0b1110101 AD <-> SCL // 0b1110110 AD <-> SDA -#define DRIVER_ADDR_1 0b1110100 -#define DRIVER_ADDR_2 0b1110110 +#define LED_DRIVER_ADDR_1 0b1110100 +#define LED_DRIVER_ADDR_2 0b1110110 -#define DRIVER_COUNT 2 -#define DRIVER_1_LED_TOTAL 25 -#define DRIVER_2_LED_TOTAL 24 -#define DRIVER_LED_TOTAL (DRIVER_1_LED_TOTAL + DRIVER_2_LED_TOTAL) +#define LED_DRIVER_COUNT 2 +#define LED_DRIVER_1_LED_TOTAL 25 +#define LED_DRIVER_2_LED_TOTAL 24 +#define DRIVER_LED_TOTAL (LED_DRIVER_1_LED_TOTAL + LED_DRIVER_2_LED_TOTAL) ``` -!> 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. +!> Note the parentheses, this is so when `LED_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() % (LED_DRIVER_1_LED_TOTAL + LED_DRIVER_2_LED_TOTAL)` will give very different results than `rand() % LED_DRIVER_1_LED_TOTAL + LED_DRIVER_2_LED_TOTAL`. Define these arrays listing all the LEDs in your `<keyboard>.c`: |