Align AW20216 driver (#13712)
* Align AW20216 driver * Update drivers/awinic/aw20216.h Co-authored-by: Ryan <fauxpark@gmail.com> * Review comments * formatting fixes * stop if start failed? * review comments Co-authored-by: Ryan <fauxpark@gmail.com>
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3 changed files with 61 additions and 93 deletions
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@ -45,8 +45,6 @@
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#define AW_PWM_REGISTER_COUNT 216
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#define AW_SPI_START(PIN) spi_start(PIN, false, 0, AW_SPI_DIVISOR)
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#ifndef AW_SCALING_MAX
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# define AW_SCALING_MAX 150
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#endif
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@ -55,128 +53,89 @@
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# define AW_GLOBAL_CURRENT_MAX 150
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#endif
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#ifndef DRIVER_1_CS
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# define DRIVER_1_CS B13
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#endif
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#ifndef DRIVER_1_EN
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# define DRIVER_1_EN C13
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#endif
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#ifndef AW_SPI_DIVISOR
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# define AW_SPI_DIVISOR 4
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#endif
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uint8_t g_spi_transfer_buffer[3] = {0};
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uint8_t g_pwm_buffer[DRIVER_COUNT][AW_PWM_REGISTER_COUNT];
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bool g_pwm_buffer_update_required[DRIVER_COUNT] = {false};
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bool AW20216_write_register(pin_t slave_pin, uint8_t page, uint8_t reg, uint8_t data) {
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// Do we need to call spi_stop() if this fails?
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if (!AW_SPI_START(slave_pin)) {
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return false;
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}
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bool AW20216_write(pin_t cs_pin, uint8_t page, uint8_t reg, uint8_t* data, uint8_t len) {
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static uint8_t s_spi_transfer_buffer[2] = {0};
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g_spi_transfer_buffer[0] = (AWINIC_ID | page | AW_WRITE);
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g_spi_transfer_buffer[1] = reg;
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g_spi_transfer_buffer[2] = data;
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if (spi_transmit(g_spi_transfer_buffer, 3) != SPI_STATUS_SUCCESS) {
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if (!spi_start(cs_pin, false, 0, AW_SPI_DIVISOR)) {
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spi_stop();
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return false;
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}
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s_spi_transfer_buffer[0] = (AWINIC_ID | page | AW_WRITE);
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s_spi_transfer_buffer[1] = reg;
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if (spi_transmit(s_spi_transfer_buffer, 2) != SPI_STATUS_SUCCESS) {
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spi_stop();
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return false;
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}
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if (spi_transmit(data, len) != SPI_STATUS_SUCCESS) {
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spi_stop();
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return false;
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}
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spi_stop();
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return true;
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}
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bool AW20216_init_scaling(void) {
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static inline bool AW20216_write_register(pin_t cs_pin, uint8_t page, uint8_t reg, uint8_t value) {
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// Little wrapper so callers need not care about sending a buffer
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return AW20216_write(cs_pin, page, reg, &value, 1);
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}
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static void AW20216_init_scaling(pin_t cs_pin) {
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// Set constant current to the max, control brightness with PWM
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aw_led led;
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for (uint8_t i = 0; i < DRIVER_LED_TOTAL; i++) {
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led = g_aw_leds[i];
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if (led.driver == 0) {
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AW20216_write_register(DRIVER_1_CS, AW_PAGE_SCALING, led.r, AW_SCALING_MAX);
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AW20216_write_register(DRIVER_1_CS, AW_PAGE_SCALING, led.g, AW_SCALING_MAX);
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AW20216_write_register(DRIVER_1_CS, AW_PAGE_SCALING, led.b, AW_SCALING_MAX);
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}
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#ifdef DRIVER_2_CS
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else if (led.driver == 1) {
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AW20216_write_register(DRIVER_2_CS, AW_PAGE_SCALING, led.r, AW_SCALING_MAX);
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AW20216_write_register(DRIVER_2_CS, AW_PAGE_SCALING, led.g, AW_SCALING_MAX);
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AW20216_write_register(DRIVER_2_CS, AW_PAGE_SCALING, led.b, AW_SCALING_MAX);
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}
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#endif
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for (uint8_t i = 0; i < AW_PWM_REGISTER_COUNT; i++) {
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AW20216_write_register(cs_pin, AW_PAGE_SCALING, i, AW_SCALING_MAX);
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}
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return true;
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}
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bool AW20216_soft_enable(void) {
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AW20216_write_register(DRIVER_1_CS, AW_PAGE_FUNCTION, AW_REG_CONFIGURATION, AW_CONFIG_DEFAULT | AW_CHIPEN);
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#ifdef DRIVER_2_CS
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AW20216_write_register(DRIVER_2_CS, AW_PAGE_FUNCTION, AW_REG_CONFIGURATION, AW_CONFIG_DEFAULT | AW_CHIPEN);
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#endif
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return true;
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static inline void AW20216_init_current_limit(pin_t cs_pin) {
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// Push config
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AW20216_write_register(cs_pin, AW_PAGE_FUNCTION, AW_REG_GLOBALCURRENT, AW_GLOBAL_CURRENT_MAX);
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}
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void AW20216_update_pwm(int index, uint8_t red, uint8_t green, uint8_t blue) {
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aw_led led = g_aw_leds[index];
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if (led.driver == 0) {
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AW20216_write_register(DRIVER_1_CS, AW_PAGE_PWM, led.r, red);
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AW20216_write_register(DRIVER_1_CS, AW_PAGE_PWM, led.g, green);
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AW20216_write_register(DRIVER_1_CS, AW_PAGE_PWM, led.b, blue);
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}
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#ifdef DRIVER_2_CS
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else if (led.driver == 1) {
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AW20216_write_register(DRIVER_2_CS, AW_PAGE_PWM, led.r, red);
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AW20216_write_register(DRIVER_2_CS, AW_PAGE_PWM, led.g, green);
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AW20216_write_register(DRIVER_2_CS, AW_PAGE_PWM, led.b, blue);
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}
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#endif
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return;
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static inline void AW20216_soft_enable(pin_t cs_pin) {
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// Push config
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AW20216_write_register(cs_pin, AW_PAGE_FUNCTION, AW_REG_CONFIGURATION, AW_CONFIG_DEFAULT | AW_CHIPEN);
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}
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void AW20216_init(void) {
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// All LEDs should start with all scaling and PWM registers as off
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setPinOutput(DRIVER_1_EN);
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writePinHigh(DRIVER_1_EN);
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AW20216_write_register(DRIVER_1_CS, AW_PAGE_FUNCTION, AW_REG_GLOBALCURRENT, AW_GLOBAL_CURRENT_MAX);
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#ifdef DRIVER_2_EN
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setPinOutput(DRIVER_2_EN);
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writePinHigh(DRIVER_2_EN);
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AW20216_write_register(DRIVER_2_CS, AW_PAGE_FUNCTION, AW_REG_GLOBALCURRENT, AW_GLOBAL_CURRENT_MAX);
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#endif
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AW20216_init_scaling();
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AW20216_soft_enable();
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return;
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void AW20216_init(pin_t cs_pin, pin_t en_pin) {
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setPinOutput(en_pin);
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writePinHigh(en_pin);
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// Drivers should start with all scaling and PWM registers as off
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AW20216_init_current_limit(cs_pin);
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AW20216_init_scaling(cs_pin);
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AW20216_soft_enable(cs_pin);
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}
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void AW20216_set_color(int index, uint8_t red, uint8_t green, uint8_t blue) {
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aw_led led = g_aw_leds[index];
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aw_led led = g_aw_leds[index];
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g_pwm_buffer[led.driver][led.r] = red;
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g_pwm_buffer[led.driver][led.g] = green;
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g_pwm_buffer[led.driver][led.b] = blue;
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g_pwm_buffer_update_required[led.driver] = true;
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return;
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}
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void AW20216_set_color_all(uint8_t red, uint8_t green, uint8_t blue) {
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for (uint8_t i = 0; i < DRIVER_LED_TOTAL; i++) {
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AW20216_set_color(i, red, green, blue);
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}
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return;
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}
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void AW20216_write_pwm_buffer(pin_t slave_pin, uint8_t buffer_idx) {
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AW_SPI_START(slave_pin);
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spi_write((AWINIC_ID | AW_PAGE_PWM | AW_WRITE));
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spi_write(0);
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spi_transmit(g_pwm_buffer[buffer_idx], AW_PWM_REGISTER_COUNT);
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spi_stop();
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}
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void AW20216_update_pwm_buffers(void) {
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AW20216_write_pwm_buffer(DRIVER_1_CS, 0);
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#ifdef DRIVER_2_CS
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AW20216_write_pwm_buffer(DRIVER_2_CS, 1);
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#endif
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return;
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void AW20216_update_pwm_buffers(pin_t cs_pin, uint8_t index) {
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if (g_pwm_buffer_update_required[index]) {
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AW20216_write(cs_pin, AW_PAGE_PWM, 0, g_pwm_buffer[index], AW_PWM_REGISTER_COUNT);
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}
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g_pwm_buffer_update_required[index] = false;
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}
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@ -18,6 +18,7 @@
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#include <stdint.h>
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#include <stdbool.h>
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#include "gpio.h"
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typedef struct aw_led {
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uint8_t driver : 2;
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@ -28,10 +29,10 @@ typedef struct aw_led {
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extern const aw_led g_aw_leds[DRIVER_LED_TOTAL];
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void AW20216_init(void);
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void AW20216_init(pin_t cs_pin, pin_t en_pin);
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void AW20216_set_color(int index, uint8_t red, uint8_t green, uint8_t blue);
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void AW20216_set_color_all(uint8_t red, uint8_t green, uint8_t blue);
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void AW20216_update_pwm_buffers(void);
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void AW20216_update_pwm_buffers(pin_t cs_pin, uint8_t index);
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#define CS1_SW1 0x00
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#define CS2_SW1 0x01
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@ -186,10 +186,18 @@ const rgb_matrix_driver_t rgb_matrix_driver = {
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# include "spi_master.h"
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static void init(void) {
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spi_init();
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AW20216_init();
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AW20216_init(DRIVER_1_CS, DRIVER_1_EN);
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# ifdef DRIVER_2_CS
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AW20216_init(DRIVER_2_CS, DRIVER_2_EN);
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# endif
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}
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static void flush(void) { AW20216_update_pwm_buffers(); }
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static void flush(void) {
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AW20216_update_pwm_buffers(DRIVER_1_CS, 0);
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# ifdef DRIVER_2_CS
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AW20216_update_pwm_buffers(DRIVER_2_CS, 1);
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# endif
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}
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const rgb_matrix_driver_t rgb_matrix_driver = {
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.init = init,
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