From 529f067e65b0146c5afa150103809ba5e09869b7 Mon Sep 17 00:00:00 2001
From: lonkaars <loek@pipeframe.xyz>
Date: Sun, 29 May 2022 13:15:58 +0200
Subject: client/robot sim connected

---
 client/serial_linux.c | 99 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 99 insertions(+)
 create mode 100644 client/serial_linux.c

(limited to 'client/serial_linux.c')

diff --git a/client/serial_linux.c b/client/serial_linux.c
new file mode 100644
index 0000000..ae8e646
--- /dev/null
+++ b/client/serial_linux.c
@@ -0,0 +1,99 @@
+#ifdef W2_HOST_LINUX
+
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <termios.h>
+#include <unistd.h>
+
+#include "../shared/consts.h"
+#include "serial.h"
+
+struct termios g_w2_tty;
+struct termios g_w2_tty_old;
+int g_w2_serial_handle;
+
+char g_w2_serial_buffer[W2_SERIAL_READ_BUFFER_SIZE];
+uint8_t g_w2_serial_buffer_index;
+uint8_t g_w2_serial_buffer_head;
+
+speed_t w2_baud_map(int baud) {
+	switch (baud) {
+		case 9600:
+			return B9600;
+		case 19200:
+			return B19200;
+		case 38400:
+			return B38400;
+		case 57600:
+			return B57600;
+		case 115200:
+			return B115200;
+		case 230400:
+			return B230400;
+		case 460800:
+			return B460800;
+		case 500000:
+			return B500000;
+		case 576000:
+			return B576000;
+		case 921600:
+			return B921600;
+		case 1000000:
+			return B1000000;
+		case 1152000:
+			return B1152000;
+		case 1500000:
+			return B1500000;
+		case 2000000:
+			return B2000000;
+		case 2500000:
+			return B2500000;
+		case 3000000:
+			return B3000000;
+		case 3500000:
+			return B3500000;
+		case 4000000:
+			return B4000000;
+		default:
+			return B0;
+	}
+}
+
+int w2_serial_read() {
+	int return_val;
+	int bytes = read(g_w2_serial_handle, &return_val, 1);
+	return return_val == -1 || bytes != 1 ? -1 : (uint8_t)return_val;
+}
+
+bool w2_serial_write(char *data, uint8_t length) {
+	return write(g_w2_serial_handle, data, length) == length;
+}
+
+bool w2_serial_open(const char *port_name) {
+	g_w2_serial_handle = open(port_name, O_RDWR | O_NOCTTY | O_NONBLOCK);
+	if (g_w2_serial_handle < 0 || tcgetattr(g_w2_serial_handle, &g_w2_tty) != 0) return false;
+
+	g_w2_tty_old = g_w2_tty;
+
+	speed_t baud = w2_baud_map(W2_SERIAL_BAUD);
+	cfsetospeed(&g_w2_tty, baud);
+	cfsetispeed(&g_w2_tty, baud);
+
+	g_w2_tty.c_cflag &= ~(PARENB | CSTOPB | CSIZE | CRTSCTS);
+	g_w2_tty.c_cflag |= CS8 | CREAD | CLOCAL;
+	g_w2_tty.c_cc[VMIN]	 = 0;
+	g_w2_tty.c_cc[VTIME] = 0;
+
+	cfmakeraw(&g_w2_tty);
+
+	tcflush(g_w2_serial_handle, TCIFLUSH);
+
+	if (tcsetattr(g_w2_serial_handle, TCSANOW, &g_w2_tty) != 0) return false;
+
+	return true;
+}
+
+void w2_serial_close() { close(g_w2_serial_handle); }
+
+#endif
-- 
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