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2022-10-30 23:00:53 +01:00
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+/*
+    MIT License
+
+    Copyright (c) 2016-2018, Alexey Dynda
+
+    Permission is hereby granted, free of charge, to any person obtaining a copy
+    of this software and associated documentation files (the "Software"), to deal
+    in the Software without restriction, including without limitation the rights
+    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+    copies of the Software, and to permit persons to whom the Software is
+    furnished to do so, subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be included in all
+    copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+    SOFTWARE.
+*/
+
+
+#include "ssd1306_uart_builtin.h"
+#include "intf/ssd1306_interface.h"
+
+#include "ssd1306_hal/io.h"
+
+#if defined(CONFIG_AVR_UART_AVAILABLE) && defined(CONFIG_AVR_UART_ENABLE)
+
+#include "ssd1306_uart.h"
+
+static void ssd1306_uartStart(void)
+{
+}
+
+static void ssd1306_uartStop(void)
+{
+    uart_send_byte(0x7E);
+}
+
+static void ssd1306_uartSendByte(uint8_t data)
+{
+    if ((data == 0x7E) || (data == 0x7D))
+    {
+         uart_send_byte(0x7D);
+         data ^= 0x20;
+    }
+    uart_send_byte(data);
+}
+
+static void ssd1306_uartSendBytes(const uint8_t * buffer, uint16_t len)
+{
+    while (len--)
+    {
+        ssd1306_uartSendByte(*buffer);
+        buffer++;
+    }
+}
+
+void ssd1306_uartInit_Builtin(uint32_t baud)
+{
+    if (!baud) baud = 115200;
+    uart_init(baud);
+    ssd1306_intf.spi = 0;
+    ssd1306_intf.start = ssd1306_uartStart;
+    ssd1306_intf.stop = ssd1306_uartStop;
+    ssd1306_intf.send = ssd1306_uartSendByte;
+    ssd1306_intf.send_buffer = ssd1306_uartSendBytes;
+    ssd1306_intf.close = ssd1306_uartStart;
+}
+
+#endif