From 6b4c156ae0f3007ff16c9699ca4ef30baf098f91 Mon Sep 17 00:00:00 2001
From: leo <leo.lemaire007@orange.fr>
Date: Wed, 30 Mar 2022 22:09:02 +0200
Subject: [PATCH] convenience function

---
 CMakeLists.txt       |  4 ++--
 include/scd4x_data.h |  5 +++++
 scd4x_config.c       | 17 +++++++++++++++++
 3 files changed, 24 insertions(+), 2 deletions(-)
 create mode 100644 scd4x_config.c

diff --git a/CMakeLists.txt b/CMakeLists.txt
index f42e0da..c60a917 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,3 +1,3 @@
-idf_component_register(SRCS "sensirion_common.c" "sensirion_i2c.c" "sensirion_i2c_hal.c" "scd4x_i2c.c"
+idf_component_register(SRCS "sensirion_common.c" "sensirion_i2c.c" "sensirion_i2c_hal.c" "scd4x_i2c.c" "scd4x_config.c"
                     INCLUDE_DIRS "include"
-		    REQUIRES "driver")
+		    REQUIRES driver nvs_flash)
diff --git a/include/scd4x_data.h b/include/scd4x_data.h
index c8818e7..a3e1bc3 100644
--- a/include/scd4x_data.h
+++ b/include/scd4x_data.h
@@ -1,6 +1,8 @@
 #ifndef SCD4X_DATA_H
 #define SCD4X_DATA_H
 
+#include "nvs_flash.h"
+
 struct scd4x_data {
 	uint16_t co2;
 	int32_t temperature;
@@ -11,7 +13,10 @@ typedef struct scd4x_data scd4x_data_t;
 struct scd4x_config {
 	scd4x_data_t* measure;
 	uint16_t delay;
+	uint8_t mode;
 };
 typedef struct scd4x_config scd4x_config_t;
 
+scd4x_config_t* get_sensor_configuration(nvs_handle_t nvs);
+
 #endif
diff --git a/scd4x_config.c b/scd4x_config.c
new file mode 100644
index 0000000..79fcdb9
--- /dev/null
+++ b/scd4x_config.c
@@ -0,0 +1,17 @@
+#include "nvs_flash.h"
+
+#include "scd4x_data.h"
+
+scd4x_config_t* get_sensor_configuration(nvs_handle_t nvs){
+	scd4x_data_t* data = malloc(sizeof(scd4x_data_t));
+	uint16_t conf = 0;
+	ESP_ERROR_CHECK(nvs_get_u16(nvs, "sensor_conf", &conf));
+	
+	scd4x_config_t* config = malloc(sizeof(scd4x_config_t));
+	*config = (scd4x_config_t) {
+		.measure = data,
+		.delay = (conf >> 2),
+		.mode = (conf & 0b11)
+	};
+	return config;
+}