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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27
Inc/bitband.h
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@ -1,27 +0,0 @@
/*
* bitband.h
*
* Created on: Dec 14, 2018
* Author: abody
*/
#ifndef BITBAND_H_
#define BITBAND_H_
#include <inttypes.h>
#define RAM_BASE 0x20000000
#define RAM_BB_BASE 0x22000000
#define RAM_ResetBit_BB(VarAddr, BitNumber) (*(volatile uint32_t *) (RAM_BB_BASE | ((VarAddr - RAM_BASE) << 5) | ((BitNumber) << 2)) = 0)
#define RAM_SetBit_BB(VarAddr, BitNumber) (*(volatile uint32_t *) (RAM_BB_BASE | ((VarAddr - RAM_BASE) << 5) | ((BitNumber) << 2)) = 1)
#define RAM_GetBit_BB(VarAddr, BitNumber) (*(volatile uint32_t *) (RAM_BB_BASE | ((VarAddr - RAM_BASE) << 5) | ((BitNumber) << 2)))
#define BITBAND_RAM(address, bit) ( (__IO uint32_t *) (RAM_BB_BASE + (((uint32_t)address) - RAM_BASE) * 32 + (bit) * 4))
#define IO_BASE 0x20000000
#define IO_BB_BASE 0x22000000
#define IO_ResetBit_BB(VarAddr, BitNumber) (*(volatile uint32_t *) (IO_BB_BASE | ((VarAddr - IO_BASE) << 5) | ((BitNumber) << 2)) = 0)
#define IO_SetBit_BB(VarAddr, BitNumber) (*(volatile uint32_t *) (IO_BB_BASE | ((VarAddr - IO_BASE) << 5) | ((BitNumber) << 2)) = 1)
#define IO_GetBit_BB(VarAddr, BitNumber) (*(volatile uint32_t *) (IO_BB_BASE | ((VarAddr - IO_BASE) << 5) | ((BitNumber) << 2)))
#define BITBAND_IO(address, bit) ( (__IO uint32_t *) (IO_BB_BASE + (((uint32_t)address) - IO_BASE) * 32 + (bit) * 4))
#endif /* BITBAND_H_ */

48
Src/main.c
View file

@ -44,16 +44,22 @@
#include "gpio.h" #include "gpio.h"
/* USER CODE BEGIN Includes */ /* USER CODE BEGIN Includes */
#include "bitband.h" #include <string.h>
/* USER CODE END Includes */ /* USER CODE END Includes */
/* Private variables ---------------------------------------------------------*/ /* Private variables ---------------------------------------------------------*/
/* USER CODE BEGIN PV */ /* USER CODE BEGIN PV */
/* Private variables ---------------------------------------------------------*/ /* Private variables ---------------------------------------------------------*/
#define NUMPIXELS 144
volatile uint8_t g_done = 0; volatile uint8_t g_done = 0;
uint8_t g_ledBytes[] = {0, 0xff, 0, 0xff, 0x55, 0xaa}; typedef struct {
uint8_t g_ledBits[sizeof(g_ledBytes) * 8 / 2 + 1]; 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 */ /* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/ /* Private function prototypes -----------------------------------------------*/
@ -113,19 +119,45 @@ int main(void)
MX_DMA_Init(); MX_DMA_Init();
MX_SPI1_Init(); MX_SPI1_Init();
/* USER CODE BEGIN 2 */ /* USER CODE BEGIN 2 */
convert(g_ledBytes, g_ledBits, sizeof(g_ledBytes));
/* USER CODE END 2 */ /* USER CODE END 2 */
/* Infinite loop */ /* Infinite loop */
/* USER CODE BEGIN WHILE */ /* USER CODE BEGIN WHILE */
#define BRIGHTNESS 2
#define DELAY 10
g_ledBits[sizeof(g_ledBits)-1] = 0;
memset(g_pixels, 0, sizeof(g_pixels));
while(1) while(1)
{ {
HAL_StatusTypeDef st; for(uint16_t idx=0; idx < NUMPIXELS; idx++)
g_ledBits[sizeof(g_ledBits)-1] = 0; {
st = HAL_SPI_Transmit_DMA(&hspi1, g_ledBits, sizeof(g_ledBits)); 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); while(!g_done);
HAL_Delay(1); 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 END WHILE */