portersky
a1ea02771c
Drop timeout_ms; read now returns immediately with whatever data is available (0 if none), so callers don't block the rest of their loop waiting on serial I/O. telemetry's poll loop now sleeps interval_ms itself between empty reads via a small sleep_ms helper.
74 lines
1.8 KiB
C
74 lines
1.8 KiB
C
#ifdef _MSC_VER
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#define _CRT_SECURE_NO_WARNINGS
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#endif
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#include "celrs/serial.h"
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#include "celrs/platform/serial_internal.h"
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#include <stdlib.h>
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#include <string.h>
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struct cel_serial_port {
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char path[256];
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int baud_rate;
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int fd; /* platform-specific handle (HANDLE on Win, int on POSIX) */
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};
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cel_serial_port* cel_serial_open(char const* path, int baud_rate) {
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if (path == NULL) return NULL;
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cel_serial_port* port = (cel_serial_port*)calloc(1, sizeof(cel_serial_port));
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if (port == NULL) return NULL;
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strncpy(port->path, path, sizeof(port->path) - 1);
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port->path[sizeof(port->path) - 1] = '\0';
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port->baud_rate = baud_rate;
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port->fd = -1;
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/* TODO: platform-specific open (CreateFile on Win, open+termios on POSIX) */
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(void)baud_rate;
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return port;
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}
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void cel_serial_close(cel_serial_port* port) {
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if (port == NULL) return;
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/* TODO: platform-specific close */
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free(port);
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}
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size_t cel_serial_read(cel_serial_port* port, uint8_t* buf, size_t len) {
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(void)port;
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(void)buf;
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(void)len;
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/* TODO: platform-specific non-blocking read */
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return 0;
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}
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size_t cel_serial_write(cel_serial_port* port, uint8_t const* buf, size_t len) {
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(void)port;
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(void)buf;
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(void)len;
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/* TODO: platform-specific write */
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return 0;
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}
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void cel_serial_flush(cel_serial_port* port) {
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(void)port;
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/* TODO: platform-specific flush */
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}
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int cel_serial_list_ports(char*** out_ports, int max_ports) {
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if (out_ports == NULL) return -1;
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if (max_ports <= 0) max_ports = 64;
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return cel_serial_platform_list_ports(out_ports, max_ports);
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}
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void cel_serial_free_ports(char** ports, int count) {
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if (ports == NULL) return;
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for (int i = 0; i < count; i++) {
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free(ports[i]);
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}
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free(ports);
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}
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