playground-stm32/neopixel_f103_mvp
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the first effect

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This commit is contained in:
Attila BODY 2018-12-16 16:10:14 +01:00
parent f02188bf2d
commit d140baf50e
2 changed files with 44 additions and 39 deletions
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56
Src/main.c
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@ -44,16 +44,22 @@
#include "gpio.h"
/* USER CODE BEGIN Includes */
#include "bitband.h"
#include <string.h>
/* USER CODE END Includes */
/* Private variables ---------------------------------------------------------*/
/* USER CODE BEGIN PV */
/* Private variables ---------------------------------------------------------*/
#define NUMPIXELS 144
volatile uint8_t g_done = 0;
uint8_t g_ledBytes[] = {0, 0xff, 0, 0xff, 0x55, 0xaa};
uint8_t g_ledBits[sizeof(g_ledBytes) * 8 / 2 + 1];
typedef struct {
uint8_t g;
uint8_t r;
uint8_t b;
} pixel_t;
pixel_t g_pixels[NUMPIXELS];
uint8_t g_ledBits[sizeof(g_pixels) * 8 / 2 + 1];
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
@ -113,24 +119,50 @@ int main(void)
MX_DMA_Init();
MX_SPI1_Init();
/* USER CODE BEGIN 2 */
convert(g_ledBytes, g_ledBits, sizeof(g_ledBytes));
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while(1)
{
HAL_StatusTypeDef st;
g_ledBits[sizeof(g_ledBits)-1] = 0;
st = HAL_SPI_Transmit_DMA(&hspi1, g_ledBits, sizeof(g_ledBits));
while(!g_done);
HAL_Delay(1);
#define BRIGHTNESS 2
#define DELAY 10
g_ledBits[sizeof(g_ledBits)-1] = 0;
memset(g_pixels, 0, sizeof(g_pixels));
while(1)
{
for(uint16_t idx=0; idx < NUMPIXELS; idx++)
{
if(idx % 3 == 0) g_pixels[idx].r = BRIGHTNESS;
else if(idx % 3 == 1) g_pixels[idx].g = BRIGHTNESS;
else g_pixels[idx].b = BRIGHTNESS;
convert((uint8_t*)g_pixels, g_ledBits, sizeof(g_pixels));
HAL_SPI_Transmit_DMA(&hspi1, g_ledBits, sizeof(g_ledBits));
while(!g_done);
HAL_Delay(DELAY);
}
for(uint16_t idx=0; idx < NUMPIXELS; idx++)
{
if(idx % 3 == 0) g_pixels[idx].r = 0;
else if(idx % 3 == 1) g_pixels[idx].g = 0;
else g_pixels[idx].b = 0;
convert((uint8_t*)g_pixels, g_ledBits, sizeof(g_pixels));
HAL_SPI_Transmit_DMA(&hspi1, g_ledBits, sizeof(g_ledBits));
while(!g_done);
HAL_Delay(DELAY);
}
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
}
}
/* USER CODE END 3 */
}