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update modbus

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This commit is contained in:
chenzongxiong
2026-02-09 17:55:33 +08:00
parent 270141591e
commit fb4e311fbe
22 changed files with 4279 additions and 2075 deletions
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26
calib_board/usr/protocol/proto_modbus_lib.c
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@@ -12,20 +12,16 @@
**************************************************/
u16 modbus_lib_crc16(u8 *p_data, u16 len)
{
u16 crc16 = 0xffff;
u16 i;
while(len--)
{
crc16 = crc16^(*p_data++);
for(i=0; i++<8; )
{
if(crc16&0x0001)
{
crc16 = (crc16>>1)^0xa001;
}
else
{
crc16>>=1;
u16 crc16 = 0xFFFF;
u16 i, j;
for (i = 0; i < len; i++) {
crc16 ^= p_data[i];
for (j = 0; j < 8; j++) {
if (crc16 & 0x0001) {
crc16 >>= 1;
crc16 ^= 0xA001;
} else {
crc16 >>= 1;
}
}
}
@@ -197,7 +193,7 @@ void modbus_lib_data_read(u8 id,u16 addr,u16 num,void (*send)(u8 *,u16 ))
u8 tx[8];
u16 crc16;
tx[0] = id;
tx[1] = 0x41;//0x03;
tx[1] = 0x03;//0x03;
tx[2] = (addr >> 8) & 0xff;
tx[3] = addr & 0xff;
tx[4] = (num >> 8) & 0xff;