webadmin/pico-keys-sdk
1
0
Fork 0
mirror of https://github.com/polhenarejos/pico-keys-sdk synced 2026-06-10 11:59:05 +02:00
Code Issues Packages Projects Releases Wiki Activity

Update ws2812 pio program and optimized the process of RGB color values

Browse Source 
1. Update ws2812 pio program to the latest version in pico-examples.
   References: https://github.com/raspberrypi/pico-examples/pull/486
2. Modify the rgbw type to false since we don't use the white channel.
3. Optimize the process of RGB color values to avoid a lot of shift
   operations and improve readability.
This commit is contained in:
Ming Kuang
2025-02-09 16:17:14 +08:00
parent 44ca760e1c
commit 29c0d078c3
1 changed files with 54 additions and 27 deletions
Download Patch File Download Diff File Expand all files Collapse all files

79
src/led/led_ws2812.c
View File

@@ -21,23 +21,32 @@
#include "hardware/pio.h" #include "hardware/pio.h"
#include "hardware/clocks.h" #include "hardware/clocks.h"
#define ws2812_wrap_target 0 #define ws2812_wrap_target 0
#define ws2812_wrap 3 #define ws2812_wrap 3
#define ws2812_T1 2 #define ws2812_pio_version 0
#define ws2812_T2 5
#define ws2812_T3 3 #define ws2812_T1 3
#define ws2812_T2 3
#define ws2812_T3 4
static const uint16_t ws2812_program_instructions[] = { static const uint16_t ws2812_program_instructions[] = {
// .wrap_target // .wrap_target
0x6221, // 0: out x, 1 side 0 [2] 0x6321, // 0: out x, 1 side 0 [3]
0x1123, // 1: jmp !x, 3 side 1 [1] 0x1223, // 1: jmp !x, 3 side 1 [2]
0x1400, // 2: jmp 0 side 1 [4] 0x1200, // 2: jmp 0 side 1 [2]
0xa442, // 3: nop side 0 [4] 0xa242, // 3: nop side 0 [2]
// .wrap // .wrap
}; };
static const struct pio_program ws2812_program = { static const struct pio_program ws2812_program = {
.instructions = ws2812_program_instructions, .instructions = ws2812_program_instructions,
.length = 4, .length = 4,
.origin = -1, .origin = -1,
.pio_version = ws2812_pio_version,
#if PICO_PIO_VERSION > 0
.used_gpio_ranges = 0x0
#endif
}; };
static inline pio_sm_config ws2812_program_get_default_config(uint offset) { static inline pio_sm_config ws2812_program_get_default_config(uint offset) {
@@ -46,6 +55,7 @@ static inline pio_sm_config ws2812_program_get_default_config(uint offset) {
sm_config_set_sideset(&c, 1, false, false); sm_config_set_sideset(&c, 1, false, false);
return c; return c;
} }
static inline void ws2812_program_init(PIO pio, uint sm, uint offset, uint pin, float freq, bool rgbw) { static inline void ws2812_program_init(PIO pio, uint sm, uint offset, uint pin, float freq, bool rgbw) {
pio_gpio_init(pio, pin); pio_gpio_init(pio, pin);
pio_sm_set_consecutive_pindirs(pio, sm, pin, 1, true); pio_sm_set_consecutive_pindirs(pio, sm, pin, 1, true);
@@ -68,20 +78,41 @@ void led_driver_init() {
if (phy_data.led_gpio_present) { if (phy_data.led_gpio_present) {
gpio = phy_data.led_gpio; gpio = phy_data.led_gpio;
} }
ws2812_program_init(pio, sm, offset, gpio, 800000, true); ws2812_program_init(pio, sm, offset, gpio, 800000, false);
} }
uint32_t pixel[] = { struct urgb_color {
0x00000000, // 0: off uint8_t r;
0x00ff0000, // 1: red uint8_t g;
0xff000000, // 2: green uint8_t b;
0x0000ff00, // 3: blue
0xffff0000, // 4: yellow
0x00ffff00, // 5: magenta
0xff00ff00, // 6: cyan
0xffffff00 // 7: white
}; };
static struct urgb_color urgb_color_table[] = {
{0x00, 0x00, 0x00}, // 0: off LED_COLOR_OFF
{0xff, 0x00, 0x00}, // 1: red LED_COLOR_RED
{0x00, 0xff, 0x00}, // 2: green LED_COLOR_GREEN
{0x00, 0x00, 0xff}, // 3: blue LED_COLOR_BLUE
{0xff, 0xff, 0x00}, // 4: yellow LED_COLOR_YELLOW
{0xff, 0x00, 0xff}, // 5: magenta LED_COLOR_MAGENTA
{0x00, 0xff, 0xff}, // 6: cyan LED_COLOR_CYAN
{0xff, 0xff, 0xff} // 7: white LED_COLOR_WHITE
};
static inline uint32_t urgb_u32(uint8_t r, uint8_t g, uint8_t b) {
return ((uint32_t) (r) << 8) | // For GRB data ordering WS2812
((uint32_t) (g) << 16) |
(uint32_t) (b);
#if 0 // TODO: How to adapt WS2812 with different data ordering ?
return ((uint32_t)(r) << 16) | // For RGB data ordering WS2812
((uint32_t)(g) << 8) |
(uint32_t)(b);
#endif
}
static inline void ws2812_put_pixel(uint32_t u32_pixel) {
pio_sm_put_blocking(pio0, 0, u32_pixel << 8u);
}
void led_driver_color(uint8_t color, uint32_t led_brightness, float progress) { void led_driver_color(uint8_t color, uint32_t led_brightness, float progress) {
if (!(phy_data.opts & PHY_OPT_DIMM)) { if (!(phy_data.opts & PHY_OPT_DIMM)) {
progress = progress >= 0.5 ? 1 : 0; progress = progress >= 0.5 ? 1 : 0;
@@ -89,16 +120,12 @@ void led_driver_color(uint8_t color, uint32_t led_brightness, float progress) {
uint32_t led_phy_btness = phy_data.led_brightness_present ? phy_data.led_brightness : MAX_BTNESS; uint32_t led_phy_btness = phy_data.led_brightness_present ? phy_data.led_brightness : MAX_BTNESS;
float brightness = ((float)led_brightness / MAX_BTNESS) * ((float)led_phy_btness / MAX_BTNESS) * progress; float brightness = ((float)led_brightness / MAX_BTNESS) * ((float)led_phy_btness / MAX_BTNESS) * progress;
uint32_t pixel_color = pixel[color]; struct urgb_color pixel_color = urgb_color_table[color];
uint8_t r = (pixel_color >> 16) & 0xFF; pixel_color.r = (uint8_t)(pixel_color.r * brightness);
uint8_t g = (pixel_color >> 24) & 0xFF; pixel_color.g = (uint8_t)(pixel_color.g * brightness);
uint8_t b = (pixel_color >> 8) & 0xFF; pixel_color.b = (uint8_t)(pixel_color.b * brightness);
r = (uint8_t)(r * brightness); ws2812_put_pixel(urgb_u32(pixel_color.r, pixel_color.g, pixel_color.b));
g = (uint8_t)(g * brightness);
b = (uint8_t)(b * brightness);
pio_sm_put_blocking(pio0, 0, (g << 24) | (r << 16) | (b << 8));
} }
#endif #endif