1 files changed, 64 insertions, 0 deletions
diff --git a/fw/serial.h b/fw/serial.h
new file mode 100644
index 0000000..509c742
--- /dev/null
+++ b/fw/serial.h
@@ -0,0 +1,64 @@
+/* Megumin LED display firmware
+ * Copyright (C) 2018 Sebastian Götte <code@jaseg.net>
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __SERIAL_H__
+#define __SERIAL_H__
+
+#include "global.h"
+#include "display.h"
+
+/* High-level stuff */
+void serial_init(void);
+void send_status_reply(void);
+
+/* Internal low-level stuff */
+void tx_char(uint8_t c);
+void send_frame_formatted(uint8_t *buf, int len);
+volatile uint8_t *packet_received(int len);
+
+/* Error counters for debugging */
+extern unsigned int uart_overruns;
+extern unsigned int frame_overruns;
+extern unsigned int invalid_frames;
+
+union tx_buf_union {
+    struct __attribute__((packed)) {
+        uint8_t  firmware_version,
+                 hardware_version,
+                 digit_rows,
+                 digit_cols;
+        uint32_t uptime_s,
+                 framerate_millifps,
+                 uart_overruns,
+                 frame_overruns,
+                 invalid_frames;
+         int16_t vcc_mv,
+                 temp_celsius;
+         uint8_t nbits;
+    } desc_reply;
+    uint8_t byte_data[0];
+};
+
+union rx_buf_union {
+    struct __attribute__((packed)) { struct framebuf fb; uint8_t end[0]; } set_fb_rq;
+    struct __attribute__((packed)) { uint8_t nbits;      uint8_t end[0]; } set_nbits_rq;
+    uint8_t byte_data[0];
+    uint32_t mac_data;
+};
+extern volatile union rx_buf_union rx_buf;
+
+#endif/*__SERIAL_H__*/