Revision 0:55f43c87934f, committed 2018-05-05
- Comitter:
- hamaint
- Date:
- Sat May 05 17:33:28 2018 +0000
- Commit message:
- serial yolo
Changed in this revision
| main.cpp | Show annotated file Show diff for this revision Revisions of this file |
| mbed.bld | Show annotated file Show diff for this revision Revisions of this file |
diff -r 000000000000 -r 55f43c87934f main.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Sat May 05 17:33:28 2018 +0000
@@ -0,0 +1,52 @@
+#include "mbed.h"
+
+//------------------------------------
+// Hyperterminal configuration
+// 9600 bauds, 8-bit data, no parity
+//------------------------------------
+
+UARTSerial driver(D1,D0,9600);
+uint16_t crc16(uint8_t *packet, int nBytes);
+
+int main()
+{
+ uint8_t packet[5] = {0x80,25};
+ uint8_t response[48];
+ uint8_t i,to=4;
+ uint16_t crc;
+
+ driver.write(packet,2);
+ driver.read(response,to);
+
+ for(i=0;i<to;i++){
+ printf("%d",response[i]);}
+
+
+ /*crc = crc16(packet,3);
+ packet[3] = crc>>8;
+ packet[4] = crc;*/
+
+ /*
+ printf("CRC16 : 0x%02x 0x%02x\n",packet[3],packet[4]);
+ printf("0x%02x\n",driver.write(packet,5));*/
+
+
+}
+
+uint16_t crc16(uint8_t *packet, int nBytes) {
+ uint8_t byte,bit;
+ uint16_t crc=0;
+ for (byte = 0; byte < nBytes; byte++) {
+ crc = crc ^ (packet[byte] << 8);
+
+ for (bit = 0; bit < 8; bit++) {
+ if (crc & 0x8000) {
+ crc = (crc << 1) ^ 0x1021;
+ } else {
+ crc = crc << 1;
+ }
+ }
+ }
+ printf("crc16 : 0x%04x \n",crc);
+return crc;
+}
diff -r 000000000000 -r 55f43c87934f mbed.bld --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Sat May 05 17:33:28 2018 +0000 @@ -0,0 +1,1 @@ +https://os.mbed.com/users/mbed_official/code/mbed/builds/5aab5a7997ee \ No newline at end of file