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Various fixes to NMBS_SERVER_* defines handling

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This commit is contained in:
Valerio De Benedetto 2022-07-25 15:17:47 +02:00
parent c12ba4b8a3
commit fd101fe77f
3 changed files with 25 additions and 27 deletions
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4
README.md
View File

@ -119,8 +119,8 @@ values will be treated as transport errors.
### Platform functions argument
Platform functions can access arbitrary user data through their `void* arg` argument. The argument is useful, for
example, to pass the connection a function should operate on.
Platform functions and server callbacks can access arbitrary user data through their `void* arg` argument. The argument
is useful, for example, to pass the connection a function should operate on.
Its initial value can be set inside the `nmbs_platform_conf` struct when creating the `nmbs_t` instance, and changed at
any time via the `nmbs_set_platform_arg` API method.

14
nanomodbus.c
View File

@ -255,8 +255,7 @@ static nmbs_error recv_msg_header(nmbs_t* nmbs, bool* first_byte_received) {
msg_state_reset(nmbs);
if (first_byte_received)
*first_byte_received = false;
*first_byte_received = false;
if (nmbs->platform.transport == NMBS_TRANSPORT_RTU) {
nmbs_error err = recv(nmbs, 1);
@ -266,8 +265,7 @@ static nmbs_error recv_msg_header(nmbs_t* nmbs, bool* first_byte_received) {
if (err != NMBS_ERROR_NONE)
return err;
if (first_byte_received)
*first_byte_received = true;
*first_byte_received = true;
nmbs->msg.unit_id = get_1(nmbs);
@ -285,8 +283,7 @@ static nmbs_error recv_msg_header(nmbs_t* nmbs, bool* first_byte_received) {
if (err != NMBS_ERROR_NONE)
return err;
if (first_byte_received)
*first_byte_received = true;
*first_byte_received = true;
// Advance buf_idx
discard_1(nmbs);
@ -341,7 +338,8 @@ static nmbs_error recv_res_header(nmbs_t* nmbs) {
uint8_t req_unit_id = nmbs->msg.unit_id;
uint8_t req_fc = nmbs->msg.fc;
nmbs_error err = recv_msg_header(nmbs, NULL);
bool first_byte_received;
nmbs_error err = recv_msg_header(nmbs, &first_byte_received);
if (err != NMBS_ERROR_NONE)
return err;
@ -503,7 +501,7 @@ static nmbs_error handle_read_discrete(nmbs_t* nmbs, nmbs_error (*callback)(uint
#endif
#if !defined(NMBS_SERVER_READ_HOLDING_REGISTERS_DISABLED) || !defined(NMBS_SERVER_READ_INPUTS_REGISTERS_DISABLED)
#if !defined(NMBS_SERVER_READ_HOLDING_REGISTERS_DISABLED) || !defined(NMBS_SERVER_READ_INPUT_REGISTERS_DISABLED)
static nmbs_error handle_read_registers(nmbs_t* nmbs, nmbs_error (*callback)(uint16_t, uint16_t, uint16_t*, void*)) {
nmbs_error err = recv(nmbs, 4);
if (err != NMBS_ERROR_NONE)

34
nanomodbus.h
View File

@ -53,15 +53,14 @@ extern "C" {
*/
#ifdef NMBS_SERVER_DISABLED
#define NMBS_SERVER_READ_COILS_DISABLED 1
#define NMBS_SERVER_READ_COILS_DISABLED 1
#define NMBS_SERVER_READ_DISCRETE_INPUTS_DISABLED 1
#define NMBS_SERVER_READ_HOLDING_REGISTERS_DISABLED 1
#define NMBS_SERVER_READ_INPUT_REGISTERS_DISABLED 1
#define NMBS_SERVER_WRITE_SINGLE_COIL_DISABLED 1
#define NMBS_SERVER_WRITE_SINGLE_REGISTER_DISABLED 1
#define NMBS_SERVER_WRITE_MULTIPLE_COILS_DISABLED 1
#define NMBS_SERVER_WRITE_MULTIPLE_REGISTERS_DISABLED 1
#define NMBS_SERVER_READ_COILS_DISABLED
#define NMBS_SERVER_READ_DISCRETE_INPUTS_DISABLED
#define NMBS_SERVER_READ_HOLDING_REGISTERS_DISABLED
#define NMBS_SERVER_READ_INPUT_REGISTERS_DISABLED
#define NMBS_SERVER_WRITE_SINGLE_COIL_DISABLED
#define NMBS_SERVER_WRITE_SINGLE_REGISTER_DISABLED
#define NMBS_SERVER_WRITE_MULTIPLE_COILS_DISABLED
#define NMBS_SERVER_WRITE_MULTIPLE_REGISTERS_DISABLED
#endif
/**
@ -161,37 +160,38 @@ typedef struct nmbs_platform_conf {
*/
typedef struct nmbs_callbacks {
#ifndef NMBS_SERVER_READ_COILS_DISABLED
nmbs_error (*read_coils)(uint16_t address, uint16_t quantity, nmbs_bitfield coils_out, void *arg);
nmbs_error (*read_coils)(uint16_t address, uint16_t quantity, nmbs_bitfield coils_out, void* arg);
#endif
#ifndef NMBS_SERVER_READ_DISCRETE_INPUTS_DISABLED
nmbs_error (*read_discrete_inputs)(uint16_t address, uint16_t quantity, nmbs_bitfield inputs_out, void *arg);
nmbs_error (*read_discrete_inputs)(uint16_t address, uint16_t quantity, nmbs_bitfield inputs_out, void* arg);
#endif
#ifndef NMBS_SERVER_READ_HOLDING_REGISTERS_DISABLED
nmbs_error (*read_holding_registers)(uint16_t address, uint16_t quantity, uint16_t* registers_out, void *arg);
nmbs_error (*read_holding_registers)(uint16_t address, uint16_t quantity, uint16_t* registers_out, void* arg);
#endif
#ifndef NMBS_SERVER_READ_INPUT_REGISTERS_DISABLED
nmbs_error (*read_input_registers)(uint16_t address, uint16_t quantity, uint16_t* registers_out, void *arg);
nmbs_error (*read_input_registers)(uint16_t address, uint16_t quantity, uint16_t* registers_out, void* arg);
#endif
#ifndef NMBS_SERVER_WRITE_SINGLE_COIL_DISABLED
nmbs_error (*write_single_coil)(uint16_t address, bool value, void *arg);
nmbs_error (*write_single_coil)(uint16_t address, bool value, void* arg);
#endif
#ifndef NMBS_SERVER_WRITE_SINGLE_REGISTER_DISABLED
nmbs_error (*write_single_register)(uint16_t address, uint16_t value, void *arg);
nmbs_error (*write_single_register)(uint16_t address, uint16_t value, void* arg);
#endif
#ifndef NMBS_SERVER_WRITE_MULTIPLE_COILS_DISABLED
nmbs_error (*write_multiple_coils)(uint16_t address, uint16_t quantity, const nmbs_bitfield coils, void *arg);
nmbs_error (*write_multiple_coils)(uint16_t address, uint16_t quantity, const nmbs_bitfield coils, void* arg);
#endif
#ifndef NMBS_SERVER_WRITE_MULTIPLE_REGISTERS_DISABLED
nmbs_error (*write_multiple_registers)(uint16_t address, uint16_t quantity, const uint16_t* registers, void *arg);
nmbs_error (*write_multiple_registers)(uint16_t address, uint16_t quantity, const uint16_t* registers, void* arg);
#endif
char _nonempty; // Struct may become empty, which is undefined behavior
} nmbs_callbacks;