Klagarge/Solar-Panel
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i still don't understand why MPlab don't commit this shit !

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This commit is contained in:
Rémi Heredero
2023-03-10 16:06:17 +01:00
parent 9b271afdb2
commit 2c949062dc
10 changed files with 137 additions and 62 deletions
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18
modbus.c
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@@ -43,15 +43,17 @@ void modbus_timer(void)
extern uint16_t measure_voltage();
uint8_t modbus_analyse_and_answer(void) {
// TODO -> complete the modbus analyse and answer
uint8_t length = 0;
if(rx_buf[0] == modbusAddress){
tx_buf[0] = rx_buf[0];
tx_buf[1] = rx_buf[1];
tx_buf[0] = rx_buf[0]; // Adress
tx_buf[1] = rx_buf[1]; // Function
switch(rx_buf[1]){
case READ_INPUT_REGISTERS:
tx_buf[2] = 2;
tx_buf[4] = input_registers[0];
tx_buf[3] = input_registers[0]>>8;
tx_buf[2] = 2; // Data length
tx_buf[4] = input_registers[0]; // LSB Data
tx_buf[3] = input_registers[0]>>8; // MSB Data
length = 5;
// todo choose register
break;
case READ_HOLDING_REGISTERS:
@@ -66,8 +68,7 @@ uint8_t modbus_analyse_and_answer(void) {
}
rx_buf[0] = 0;
//
modbus_send(length);
}
@@ -80,10 +81,11 @@ void modbus_char_recvd(void)
void modbus_send(uint8_t length)
{
uint16_t temp16;
uint8_t i;
// TODO -> complete modbus RCR calculation
// TODO -> complete modbus crc calculation
length += 2; // add 2 CRC bytes for total size
// For all the bytes to be transmitted