some adjustments that didn't work

drivers/arm/ws2812.c

@@ -8,20 +8,20 @@
 #include "ws2812.h"
 #include "stdlib.h"
 
-static uint8_t *fb;
+static uint32_t *fb;
 static int sLeds;
 static stm32_gpio_t *sPort;
 static uint32_t sMask;
-uint8_t* dma_source;
+uint32_t * dma_source;
 
-void setColor(uint8_t color, uint8_t *buf,uint32_t mask){
+void setColor(uint8_t color, uint32_t *buf,uint32_t mask){
   int i;
   for (i=0;i<8;i++){
     buf[i]=((color<<i)&0b10000000?0x0:mask);
   }
 }
 
-void setColorRGB(Color c, uint8_t *buf, uint32_t mask){
+void setColorRGB(Color c, uint32_t *buf, uint32_t mask){
   setColor(c.G,buf, mask);
   setColor(c.R,buf+8, mask);
   setColor(c.B,buf+16, mask);
@@ -43,7 +43,7 @@ void setColorRGB(Color c, uint8_t *buf, uint32_t mask){
  * @param[out] o_fb     initialized frame buffer
  *
  */
-void ledDriverInit(int leds, stm32_gpio_t *port, uint32_t mask, uint8_t **o_fb) {
+void ledDriverInit(int leds, stm32_gpio_t *port, uint32_t mask, uint32_t **o_fb) {
   sLeds=leds;
   sPort=port;
   sMask=mask;
@@ -72,7 +72,7 @@ void ledDriverInit(int leds, stm32_gpio_t *port, uint32_t mask, uint8_t **o_fb)
                               0,
                               0,
   };
-  dma_source = chHeapAlloc(NULL, 1);
+  dma_source = chHeapAlloc(NULL,  4);
   fb = chHeapAlloc(NULL, ((sLeds) * 24)+10);
   *o_fb=fb;
   int j;
@@ -85,8 +85,8 @@ void ledDriverInit(int leds, stm32_gpio_t *port, uint32_t mask, uint8_t **o_fb)
   dmaStreamSetTransactionSize(STM32_DMA1_STREAM2, (sLeds) * 24);
   dmaStreamSetMode(
       STM32_DMA1_STREAM2,
-      STM32_DMA_CR_DIR_M2P | STM32_DMA_CR_MINC | STM32_DMA_CR_PSIZE_BYTE
-      | STM32_DMA_CR_MSIZE_BYTE | STM32_DMA_CR_CIRC | STM32_DMA_CR_PL(2));
+      STM32_DMA_CR_DIR_M2P | STM32_DMA_CR_MINC | STM32_DMA_CR_PSIZE_WORD
+      | STM32_DMA_CR_MSIZE_WORD | STM32_DMA_CR_CIRC | STM32_DMA_CR_PL(2));
   // DMA stream 3, triggered by pwm update event. output high at beginning of signal
   dmaStreamAllocate(STM32_DMA1_STREAM3, 10, NULL, NULL);
   dmaStreamSetPeripheral(STM32_DMA1_STREAM3, &(sPort->BSRR.H.set));
@@ -94,7 +94,7 @@ void ledDriverInit(int leds, stm32_gpio_t *port, uint32_t mask, uint8_t **o_fb)
   dmaStreamSetTransactionSize(STM32_DMA1_STREAM3, 1);
   dmaStreamSetMode(
       STM32_DMA1_STREAM3, STM32_DMA_CR_TEIE |
-      STM32_DMA_CR_DIR_M2P | STM32_DMA_CR_PSIZE_BYTE | STM32_DMA_CR_MSIZE_BYTE
+      STM32_DMA_CR_DIR_M2P | STM32_DMA_CR_PSIZE_WORD | STM32_DMA_CR_MSIZE_WORD
       | STM32_DMA_CR_CIRC | STM32_DMA_CR_PL(3));
   // DMA stream 6, triggered by channel1 update event. reset output value late to indicate "1" bit to ws2812.
   // always triggers but no affect if dma stream 2 already change output value to 0
@@ -104,7 +104,7 @@ void ledDriverInit(int leds, stm32_gpio_t *port, uint32_t mask, uint8_t **o_fb)
   dmaStreamSetTransactionSize(STM32_DMA1_STREAM6, 1);
   dmaStreamSetMode(
       STM32_DMA1_STREAM6,
-      STM32_DMA_CR_DIR_M2P | STM32_DMA_CR_PSIZE_BYTE | STM32_DMA_CR_MSIZE_BYTE
+      STM32_DMA_CR_DIR_M2P | STM32_DMA_CR_PSIZE_WORD | STM32_DMA_CR_MSIZE_WORD
       | STM32_DMA_CR_CIRC | STM32_DMA_CR_PL(3));
   pwmStart(&PWMD2, &pwmc2);
   pwmStart(&PWMD3, &pwmc3);
@@ -137,7 +137,7 @@ void ledDriverWaitCycle(void){
   while (PWMD2.tim->CNT < 90 * sLeds * 24 / 90){chThdSleepMicroseconds(1);};
 }
 
-void testPatternFB(uint8_t *fb){
+void testPatternFB(uint32_t *fb){
   int i;
   Color tmpC = {rand()%256, rand()%256, rand()%256};
   for (i=0;i<sLeds;i++){

drivers/arm/ws2812.h

@@ -20,9 +20,9 @@ struct Color {
   uint8_t B;
 };
 
-void ledDriverInit(int leds, stm32_gpio_t *port, uint32_t mask, uint8_t **o_fb);
-void setColorRGB(Color c, uint8_t *buf, uint32_t mask);
-void testPatternFB(uint8_t *fb);
+void ledDriverInit(int leds, stm32_gpio_t *port, uint32_t mask, uint32_t **o_fb);
+void setColorRGB(Color c, uint32_t *buf, uint32_t mask);
+void testPatternFB(uint32_t *fb);
 void ledDriverWaitCycle(void);
 
 void ws2812_setleds(LED_TYPE *ledarray, uint16_t number_of_leds);

keyboards/qwiic_hub/qwiic_hub.c

@@ -16,10 +16,10 @@
 
 #include "qwiic_hub.h"
 
-uint8_t *o_fb;
+uint32_t *o_fb;
 
 void matrix_init_kb(void) {
-  ledDriverInit(1, GPIOB, 0b100000000, &o_fb);
+  ledDriverInit(1, GPIOB, (1UL<<8), &o_fb);
   testPatternFB(o_fb);
 
 	matrix_init_user();