diff options
| author | Aditya Naik | 2020-02-12 19:42:01 -0500 |
|---|---|---|
| committer | Aditya Naik | 2020-02-12 19:42:01 -0500 |
| commit | df1563fbea50fbf3bf0f92ae6559dd2d7f2e6b29 (patch) | |
| tree | 51f2f460e1e17845b07fecfe1101fe5b68b96a98 | |
| parent | 63e20630c9845e82ef34bd8476c3b2facfda972d (diff) | |
Static definition for CRC and formatting
| -rw-r--r-- | src/modbus.c | 2 | ||||
| -rw-r--r-- | src/modbus.h | 16 |
2 files changed, 12 insertions, 6 deletions
diff --git a/src/modbus.c b/src/modbus.c index 4bacdaf..3fae070 100644 --- a/src/modbus.c +++ b/src/modbus.c @@ -13,7 +13,7 @@ @param uint8_t a (0x00..0xFF) @return calculated CRC (0x0000..0xFFFF) */ -uint16_t crc16_update(uint16_t crc, uint8_t a) +static uint16_t crc16_update(uint16_t crc, uint8_t a) { int i; crc ^= a; diff --git a/src/modbus.h b/src/modbus.h index f7553dd..7f80c4c 100644 --- a/src/modbus.h +++ b/src/modbus.h @@ -36,16 +36,22 @@ typedef enum { extern MB_StatusTypeDef (*MB_UART_Tx)(void*, uint16_t*, uint8_t*, uint8_t*); extern MB_StatusTypeDef (*MB_UART_Rx)(void*, uint16_t*, uint8_t*, uint8_t*); -uint16_t crc16_update(uint16_t crc, uint8_t a); -MB_StatusTypeDef modbus_transaction (uint8_t func, modbus_slave_device *device, +MB_StatusTypeDef modbus_transaction(uint8_t func, modbus_slave_device *device, uint16_t rw_addr, int read_num, uint16_t write_value); -MB_StatusTypeDef ReadHoldingRegisters(modbus_slave_device *device, uint16_t reg_addr, + +MB_StatusTypeDef ReadHoldingRegisters(modbus_slave_device *device, + uint16_t reg_addr, int read_num); -MB_StatusTypeDef ReadInputRegisters(modbus_slave_device *device, uint16_t reg_addr, + +MB_StatusTypeDef ReadInputRegisters(modbus_slave_device *device, + uint16_t reg_addr, int read_num); -MB_StatusTypeDef WriteSingleRegister(modbus_slave_device *device, uint16_t reg_addr, + +MB_StatusTypeDef WriteSingleRegister(modbus_slave_device *device, + uint16_t reg_addr, uint16_t write_val); + void ClearResponseBuffer(modbus_slave_device *device); #endif |