Add a bunch of stuff: Add baudrate reconfig command to shell and move the uart to separate C file

stm-firmware/include/reflow-controller/periph-config/shell-uart-config.h

@@ -25,9 +25,11 @@
 #endif
 
 /* UART_DIV is 45.5625 => 115200 @ 84 MHz */
-#define SHELL_UART_DIV_FRACTION 9U /* Equals 9/16 = 0.5625 */
-#define SHELL_UART_DIV_MANTISSA 45U /* Equals 45 */
+#define SHELL_UART_DEFAULT_DIV_FRACTION 9U /* Equals 9/16 = 0.5625 */
+#define SHELL_UART_DEFAULT_DIV_MANTISSA 45U /* Equals 45 */
 
-#define SHELL_UART_BRR_REG_VALUE ((SHELL_UART_DIV_MANTISSA<<4) | SHELL_UART_DIV_FRACTION);
+#define SHELL_UART_DEFAULT_BRR_REG_VALUE ((SHELL_UART_DEFAULT_DIV_MANTISSA<<4) | SHELL_UART_DEFAULT_DIV_FRACTION);
+
+#define SHELL_UART_PERIPHERAL_CLOCK (84000000UL)
 
 #endif /* __SHELL_UART_CONFIG_H__ */

stm-firmware/include/reflow-controller/temp-converter.h

@@ -25,7 +25,8 @@
  * @brief Convert PT1000 resistance to temperature in degrees celsius
  * @param resistance PT1000 resistance value
  * @param[out] temp_out Temperature output
- * @return 0 if ok, -1 if value is below conversion range, 1 if value is above conversion range,-1000 in case of pointer error
+ * @return 0 if ok, -1 if value is below conversion range, 1 if value is above conversion range,
+ * -1000 in case of pointer error
  */
 int temp_converter_convert_resistance_to_temp(float resistance, float *temp_out);
 

stm-firmware/include/reflow-controller/ui/shell-uart.h

@@ -0,0 +1,51 @@
+/* Reflow Oven Controller
+*
+* Copyright (C) 2021  Mario Hüttel <mario.huettel@gmx.net>
+*
+* This file is part of the Reflow Oven Controller Project.
+*
+* The reflow oven controller is free software: you can redistribute it and/or modify
+* it under the terms of the GNU General Public License version 2 as
+* published by the Free Software Foundation.
+*
+* The Reflow Oven Control Firmware 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 the reflow oven controller project.
+* If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef __SHELL_UART_H__
+
+#include <shellmatta.h>
+#include <stddef.h>
+#include <stdint.h>
+
+/**
+ * @brief Configure the UART for the shellmatta shell.
+ *
+ * This will configure the UART for use with a DMA ring buffer.
+ * @param uart
+ */
+void shell_uart_setup(void);
+
+shellmatta_retCode_t shell_uart_write_callback(const char *data, uint32_t len);
+
+int shell_uart_receive_data_with_dma(const char **data, size_t *len);
+
+/**
+ * @brief Configure a new connection speed.
+ * @param new_baud Baudrate. E.g: 115200
+ * @return Error in permille (1/1000). A return value of 2 means a baudrate error of: 0.002 or 0.2%.
+ * Return value is negative in case of a hard error.
+ */
+int32_t shell_uart_reconfig_baud(uint32_t new_baud);
+
+uint32_t shell_uart_get_current_baudrate(void);
+
+#define __SHELL_UART_H__
+
+#endif /* __SHELL_UART_H__ */