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lib_standalone/emsuart_standalone.h

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+/*
+ * EMS-ESP - https://github.com/proddy/EMS-ESP
+ * Copyright 2019  Paul Derbyshire
+ * 
+ * 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 EMSESP_EMSUART_H
+#define EMSESP_EMSUART_H
+
+#include <Arduino.h>
+
+namespace emsesp {
+
+typedef enum {
+    EMS_TX_STATUS_OK = 1,
+    EMS_TX_WTD_TIMEOUT, // watchdog timeout during send
+    EMS_TX_BRK_DETECT,  // incoming BRK during Tx
+} EMSUART_STATUS;
+
+class EMSuart {
+  public:
+    EMSuart()  = default;
+    ~EMSuart() = default;
+
+    static void           start(uint8_t tx_mode);
+    static void           stop();
+    static void           restart();
+    static void           send_poll(uint8_t data);
+    static EMSUART_STATUS transmit(uint8_t * buf, uint8_t len);
+
+  private:
+    static char *  hextoa(char * result, const uint8_t value);
+};
+
+} // namespace emsesp
+
+#endif