From 30b46fad5764b54ab4d47e9c4024f8030e1bf1a7 Mon Sep 17 00:00:00 2001
From: Ryan <fauxpark@gmail.com>
Date: Wed, 27 Jan 2021 17:42:49 +1100
Subject: UART driver refactor (#11637)

---
 drivers/chibios/uart.c | 59 ++++++++++++++++++++++++++++++++++++++
 drivers/chibios/uart.h | 77 ++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 136 insertions(+)
 create mode 100644 drivers/chibios/uart.c
 create mode 100644 drivers/chibios/uart.h

(limited to 'drivers/chibios')

diff --git a/drivers/chibios/uart.c b/drivers/chibios/uart.c
new file mode 100644
index 0000000000..6e94899b9d
--- /dev/null
+++ b/drivers/chibios/uart.c
@@ -0,0 +1,59 @@
+/* Copyright 2021
+ *
+ *  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 <https://www.gnu.org/licenses/>.
+ */
+
+#include "uart.h"
+
+#include "quantum.h"
+
+static SerialConfig serialConfig = {
+    SERIAL_DEFAULT_BITRATE,
+    SD1_CR1,
+    SD1_CR2,
+    SD1_CR3
+};
+
+void uart_init(uint32_t baud) {
+    static bool is_initialised = false;
+
+    if (!is_initialised) {
+        is_initialised = true;
+
+        serialConfig.speed = baud;
+
+#if defined(USE_GPIOV1)
+        palSetLineMode(SD1_TX_PIN, PAL_MODE_STM32_ALTERNATE_OPENDRAIN);
+        palSetLineMode(SD1_RX_PIN, PAL_MODE_STM32_ALTERNATE_OPENDRAIN);
+#else
+        palSetLineMode(SD1_TX_PIN, PAL_MODE_ALTERNATE(SD1_TX_PAL_MODE) | PAL_STM32_OTYPE_OPENDRAIN);
+        palSetLineMode(SD1_RX_PIN, PAL_MODE_ALTERNATE(SD1_RX_PAL_MODE) | PAL_STM32_OTYPE_OPENDRAIN);
+#endif
+        sdStart(&SERIAL_DRIVER, &serialConfig);
+    }
+}
+
+void uart_putchar(uint8_t c) {
+    sdPut(&SERIAL_DRIVER, c);
+}
+
+uint8_t uart_getchar(void) {
+    msg_t res = sdGet(&SERIAL_DRIVER);
+
+    return (uint8_t)res;
+}
+
+bool uart_available(void) {
+    return !sdGetWouldBlock(&SERIAL_DRIVER);
+}
diff --git a/drivers/chibios/uart.h b/drivers/chibios/uart.h
new file mode 100644
index 0000000000..b4e20e9fd3
--- /dev/null
+++ b/drivers/chibios/uart.h
@@ -0,0 +1,77 @@
+/* Copyright 2021
+ *
+ *  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 <https://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <stdint.h>
+
+#include <hal.h>
+
+#ifndef SERIAL_DRIVER
+#    define SERIAL_DRIVER SD1
+#endif
+
+#ifndef SD1_TX_PIN
+#    define SD1_TX_PIN A9
+#endif
+
+#ifndef SD1_TX_PAL_MODE
+#    define SD1_TX_PAL_MODE 7
+#endif
+
+#ifndef SD1_RX_PIN
+#    define SD1_RX_PIN A10
+#endif
+
+#ifndef SD1_RX_PAL_MODE
+#    define SD1_RX_PAL_MODE 7
+#endif
+
+#ifndef SD1_CTS_PIN
+#    define SD1_CTS_PIN A11
+#endif
+
+#ifndef SD1_CTS_PAL_MODE
+#    define SD1_CTS_PAL_MODE 7
+#endif
+
+#ifndef SD1_RTS_PIN
+#    define SD1_RTS_PIN A12
+#endif
+
+#ifndef SD1_RTS_PAL_MODE
+#    define SD1_RTS_PAL_MODE 7
+#endif
+
+#ifndef SD1_CR1
+#    define SD1_CR1 0
+#endif
+
+#ifndef SD1_CR2
+#    define SD1_CR2 0
+#endif
+
+#ifndef SD1_CR3
+#    define SD1_CR3 0
+#endif
+
+void uart_init(uint32_t baud);
+
+void uart_putchar(uint8_t c);
+
+uint8_t uart_getchar(void);
+
+bool uart_available(void);
-- 
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