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refactor for reading modbus

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This commit is contained in:
Rémi Heredero 2023-03-10 13:49:32 +01:00
parent 5e1a035517
commit d7d1d7021c
1 changed files with 13 additions and 6 deletions
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19
modbus.c
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@ -15,6 +15,7 @@ uint8_t modbusAddress;
uint16_t input_registers[2]; uint16_t input_registers[2];
uint16_t holding_registers[2]; uint16_t holding_registers[2];
// Modbus error codes // Modbus error codes
#define ILLEGAL_FUNCTION 1 #define ILLEGAL_FUNCTION 1
#define ILLEGAL_DATA_ADDRESS 2 #define ILLEGAL_DATA_ADDRESS 2
@ -33,7 +34,10 @@ uint8_t recPtr = 0;
void modbus_timer(void) void modbus_timer(void)
{ {
// TODO -> complete what to do on modbus timer event INTCONbits.TMR0IF = 0;
recPtr = 0;
TMR0_StopTimer();
modbus_analyse_and_answer();
} }
@ -41,13 +45,15 @@ uint8_t modbus_analyse_and_answer(void) {
// TODO -> complete the modbus analyse and answer // TODO -> complete the modbus analyse and answer
rx_buf[0] = 0; rx_buf[0] = 0;
//sprintf(tx_buf, "%i", modbusAddress, ); // sprintf(tx_buf, "%i", modbusAddress, );
} }
void modbus_char_recvd(uint8_t c) void modbus_char_recvd(void)
{ {
// TODO -> complete modbus char receive rx_buf[recPtr++] = RCREG1;
TMR0_Reload();
TMR0_StartTimer();
} }
void modbus_send(uint8_t length) void modbus_send(uint8_t length)
@ -65,5 +71,6 @@ void modbus_send(uint8_t length)
void modbus_init(uint8_t address) void modbus_init(uint8_t address)
{ {
modbusAddress = address; modbusAddress = address;
// TODO -> confikre timer for modbus usage EUSART1_SetRxInterruptHandler(modbus_char_recvd);
} TMR0_SetInterruptHandler(modbus_timer);
}