develop version 2023.11.3 back from suihua

raspberrypi_spi/LocalDimming/read.c

+#include <stdio.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <sys/ioctl.h>
+#include <linux/spi/spidev.h>
+#include <stdint.h>
+#include <wiringPi.h>
+#include <string.h>
+
+int main()
+{
+    int fileuart;
+    if ((fileuart = serialOpen("/dev/ttyAMA0", 9600)) < 0)
+    {
+        printf("/dev/ttyAMA0 Open Faild\r\n");
+        // return 0;
+    }
+    printf("/dev/ttyAMA0 Open success\r\n");
+
+    char message[9] = {0x40, 0x38, 0xb, 0x6, 0x0, 0x2, 0x1, 0x2b, 0x58};
+    write(fileuart, message, 9);
+    
+    char buf[100] = {0};
+    int recbytenum = serialDataAvail(filedevid);
+    for (int i = 0; i < recbytenum; i++)
+    {
+        buf[i] = serialGetchar(filedevid);
+    }
+    for (int i = 0; i < recbytenum; i++)
+    {
+        printf("%x ", buf[i]);
+    }
+    printf("\n");
+    int angle = (buf[7] << 24) | (buf[8] << 16) | (buf[9] << 8) | buf[10];
+    printf("angle = %d\n", angle);
+    
+    return 0;
+}
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raspberrypi_spi/LocalDimming/send.c

+#include <stdio.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdint.h>
+#include <string.h>
+// crc
+uint16_t CrcValueCalc(uint8_t *cpucData, uint16_t usLength) // changed
+{
+    uint16_t crcValue = 0xffff;
+    int i;
+    while (usLength--)
+    {
+        crcValue ^= *cpucData++;
+        for (i = 8 - 1; i >= 0; i--)
+        {
+            if (crcValue & 0x0001)
+            {
+                crcValue = (crcValue >> 1) ^ 0xa001;
+            }
+            else
+            {
+                crcValue = crcValue >> 1;
+            }
+        }
+    }
+    return crcValue;
+}
+
+int main()
+{                                                           //a 10 b11 c12 d13
+	unsigned char mess[13] = {0x40, 0x38, 0x0b, 0x06, 0x00, 0x02, 0x01, 0xff, 0xff, 0xff, 0xa6, 0x00, 0x00};
+	uint16_t crc = CrcValueCalc(mess, 11);
+	mess[11] = crc & 0xff;
+	mess[12] = (crc >> 8) & 0xff;
+	for (int i = 0; i < 13; i++)
+	{
+		printf("0x%x, ", mess[i]);
+	}
+	printf("\n");
+
+
+	return 0;
+}
+
+// 120  0x40, 0x38, 0xb, 0x6, 0x0, 0x2, 0x1, 0x0, 0x0, 0x4, 0xb0, 0x1e, 0x7c,
+// 0    0x40, 0x38, 0xb, 0x6, 0x0, 0x2, 0x1, 0x0, 0x0, 0x0, 0x0, 0x1d, 0x8,
+// 60   0x40, 0x38, 0xb, 0x6, 0x0, 0x2, 0x1, 0x0, 0x0, 0x2, 0x58, 0x1d, 0x92,
+// 90   0x40, 0x38, 0xb, 0x6, 0x0, 0x2, 0x1, 0x0, 0x0, 0x8, 0x84, 0x1a, 0xab, 
+// 150  0x40, 0x38, 0xb, 0x6, 0x0, 0x2, 0x1, 0x0, 0x0, 0x5, 0xdc, 0x1f, 0xc1,
+// 30    0x40, 0x38, 0xb, 0x6, 0x0, 0x2, 0x1, 0x0, 0x0, 0x1, 0x2c, 0x1d, 0x45,
+
+// 85 0x40, 0x38, 0xb, 0x6, 0x0, 0x2, 0x1, 0x0, 0x0, 0x3, 0x52, 0x9c, 0x5
+// -25 0x40, 0x38, 0xb, 0x6, 0x0, 0x2, 0x1, 0xff, 0xff, 0xff, 0xe7, 0x1c, 0x96,
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