shell: Add dummy function save-calibration. Not yet correcly implemented!

stm-firmware/include/fatfs/ffconf.h

@@ -150,7 +150,7 @@
 */
 
 
-#define FF_FS_RPATH		0
+#define FF_FS_RPATH		2
 /* This option configures support for relative path.
 /
 /   0: Disable relative path and remove related functions.

stm-firmware/include/reflow-controller/settings/settings-sd-card.h

@@ -21,4 +21,8 @@
 #ifndef __SETTINGS_SETTINGS_SD_CARD_H__
 #define __SETTINGS_SETTINGS_SD_CARD_H__
 
+#define CALIBRATION_FILE_NAME "cal.toml"
+
+int sd_card_settings_save_calibration(float sens_deviation, float offset);
+
 #endif /* __SETTINGS_SETTINGS_SD_CARD_H__ */

stm-firmware/include/reflow-controller/settings/settings.h

@@ -22,6 +22,12 @@
 #ifndef __SETTINGS_SETTINGS_H__
 #define __SETTINGS_SETTINGS_H__
 
-int settings_save_calibration();
+/**
+ * @brief Save the calibration
+ * @param sens_deviation
+ * @param offset
+ * @return 0 if successful, -1 if generic error, -2 if medium unavailable
+ */
+int settings_save_calibration(float sens_deviation, float offset);
 
 #endif /* __SETTINGS_SETTINGS_H__ */

stm-firmware/settings/settings-sd-card.c

@@ -19,3 +19,90 @@
 */
 
 #include <reflow-controller/settings/settings-sd-card.h>
+#include <stm-periph/unique-id.h>
+#include <toml/toml.h>
+#include <fatfs/ff.h>
+
+static void get_controller_folder_path(char *path, size_t size)
+{
+	uint32_t high;
+	uint32_t mid;
+	uint32_t low;
+
+	if (!path)
+		return;
+
+	unique_id_get(&high, &mid, &low);
+
+	snprintf(path, size, "/%08X-%08X-%08X",
+		 (unsigned int)high, (unsigned int)mid, (unsigned int)low);
+}
+
+/**
+ * @brief Open or create the controller folder on the SD Card.
+ * @param[in,out] controller_folder
+ * @return 0 if opened, 1 if created and opened, -1 if error.
+ */
+static int open_or_create_controller_folder(DIR *controller_folder)
+{
+	char foldername[48];
+	int ret = -1;
+	FRESULT filesystem_result;
+
+	if (!controller_folder)
+		return -1001;
+
+	get_controller_folder_path(foldername, sizeof(foldername));
+
+	/* Check if folder is present */
+	filesystem_result = f_opendir(controller_folder, foldername);
+	if (filesystem_result == FR_OK) {
+		ret = 0;
+	} else {
+		filesystem_result = f_mkdir(foldername);
+		if (filesystem_result == FR_OK) {
+			filesystem_result = f_opendir(controller_folder, foldername);
+			if (filesystem_result == FR_OK)
+				ret = 1;
+			else
+				ret = -1;
+		} else {
+			ret = -1;
+		}
+	}
+
+	if (ret >= 0)
+		f_chdir(foldername);
+
+	return ret;
+}
+
+int sd_card_settings_save_calibration(float sens_deviation, float offset)
+{
+	DIR folder;
+	FIL cal_file;
+	int status;
+	FRESULT res;
+	UINT bw;
+	int ret = 0;
+
+	status = open_or_create_controller_folder(&folder);
+	f_closedir(&folder);
+
+	if (status < 0)
+		return -2;
+
+	/* Create new calibration file */
+	res = f_open(&cal_file, CALIBRATION_FILE_NAME, FA_CREATE_ALWAYS | FA_WRITE);
+	if (res == FR_OK) {
+		f_write(&cal_file, "Test", 4U, &bw);
+		f_close(&cal_file);
+		ret = 0;
+	} else {
+		ret = -1;
+	}
+
+	f_chdir("/");
+
+	return ret;
+}

stm-firmware/settings/settings.c

@@ -19,8 +19,10 @@
 */
 
 #include <reflow-controller/settings/settings.h>
+#include <reflow-controller/settings/settings-sd-card.h>
 
-int settings_save_calibration()
+settings_save_calibration(float sens_deviation, float offset)
 {
-	return 0;
+	/* There is no other configuration location besides the SD card (yet) */
+	return sd_card_settings_save_calibration(sens_deviation, offset);
 }

stm-firmware/shell.c

@@ -36,6 +36,7 @@
 #include <reflow-controller/stack-check.h>
 #include <reflow-controller/rotary-encoder.h>
 #include <reflow-controller/safety/safety-controller.h>
+#include <reflow-controller/settings/settings.h>
 
 #ifndef GIT_VER
 #define GIT_VER "VERSION NOT SET"
@@ -407,6 +408,24 @@ static shellmatta_retCode_t shell_cmd_read_flags(const shellmatta_handle_t handl
 	return SHELLMATTA_OK;
 }
 
+static shellmatta_retCode_t shell_cmd_save_cal(const shellmatta_handle_t handle, const char *arguments,
+					  uint32_t length)
+
+{
+	(void)length;
+	(void)arguments;
+	int res;
+
+	/* TODO: Change this */
+	res = settings_save_calibration(0.0f, 0.0f);
+	if (res) {
+		shellmatta_printf(handle, "Error saving %d\r\n", res);
+	} else {
+		shellmatta_printf(handle, "Saved!\r\n");
+	}
+
+	return SHELLMATTA_OK;
+}
 //typedef struct shellmatta_cmd
 //{
 //    char                    *cmd;       /**< command name                           */
@@ -417,7 +436,7 @@ static shellmatta_retCode_t shell_cmd_read_flags(const shellmatta_handle_t handl
 //    struct shellmatta_cmd   *next;      /**< pointer to next command or NULL        */
 //} shellmatta_cmd_t;
 
-static shellmatta_cmd_t cmd[13] = {
+static shellmatta_cmd_t cmd[14] = {
 	{
 		.cmd = "version",
 		.cmdAlias = "ver",
@@ -520,8 +539,16 @@ static shellmatta_cmd_t cmd[13] = {
 		.helpText = "",
 		.usageText = "",
 		.cmdFct = shell_cmd_read_flags,
+		.next = &cmd[13],
+	},
+	{
+		.cmd = "save-calibration",
+		.cmdAlias = "save-cal",
+		.helpText = "",
+		.usageText = "",
+		.cmdFct = shell_cmd_save_cal,
 		.next = NULL,
-	}
+	},
 };
 
 shellmatta_handle_t shell_init(shellmatta_write_t write_func)