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Allow settable SPI divisor for AW20216 driver, set default to 4 (#13309)

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Gigahawk 2021-06-23 02:57:46 -07:00 committed by GitHub
parent 531f34d2a0
commit 1ea01765e1
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2 changed files with 6 additions and 1 deletions
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1
docs/feature_rgb_matrix.md
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@ -250,6 +250,7 @@ You can use up to 2 AW20216 IC's. Do not specify `DRIVER_<N>_xxx` defines for IC
| `DRIVER_LED_TOTAL` | (Required) How many RGB lights are present across all drivers | |
| `AW_SCALING_MAX` | (Optional) LED current scaling value (0-255, higher values mean LED is brighter at full PWM) | 150 |
| `AW_GLOBAL_CURRENT_MAX` | (Optional) Driver global current limit (0-255, higher values means the driver may consume more power) | 150 |
| `AW_SPI_DIVISOR` | (Optional) Clock divisor for SPI communication (powers of 2, smaller numbers means faster communication, should not be less than 4) | 4 |
Here is an example using 2 drivers.

6
drivers/awinic/aw20216.c
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@ -59,13 +59,17 @@
# define DRIVER_1_EN C13
#endif
#ifndef AW_SPI_DIVISOR
# define AW_SPI_DIVISOR 4
#endif
uint8_t g_spi_transfer_buffer[20] = {0};
aw_led g_pwm_buffer[DRIVER_LED_TOTAL];
bool g_pwm_buffer_update_required[DRIVER_LED_TOTAL];
bool AW20216_write_register(pin_t slave_pin, uint8_t page, uint8_t reg, uint8_t data) {
// Do we need to call spi_stop() if this fails?
if (!spi_start(slave_pin, false, 0, 16)) {
if (!spi_start(slave_pin, false, 0, AW_SPI_DIVISOR)) {
return false;
}