Figured out how to turn on PSRAM

Now it looks like you can just allocate from a regular "malloc"
Code ran successfully (afaict) when writing to 7MB - didn't seem
to when doing 8MB. Not 100% sure why, but I don't think it'll
matter tbh

README.md

@@ -1,4 +1,4 @@
-# ESP Air Monitor
+# Yet Another eSP Air Monitor - YASPAM
 
 Skeletal idea for an esp based air monitor.
 
@@ -6,7 +6,7 @@ Skeletal idea for an esp based air monitor.
 
 I have used the following:
 
-* ESP32-S3 (although as far as I know, I'm not using any special features... and should work on any esp)
+* ESP32-S3 (although as far as I know, I'm not using any special features... and should work on any esp).
 * DHT22
 * PMS5003
 

components/dht22/dht22.c

@@ -1,5 +1,6 @@
 #include "dht22.h"
 #include "sdkconfig.h"
+#include "esp_log.h"
 
 #define DATA_GPIO CONFIG_DHT22_DATA_GPIO
 
@@ -15,7 +16,6 @@ deci_degrees_c _dht22_temperature = INT16_MIN;
 dht22_error dht22_read() {
   uint8_t data[5] = {0};
 
-
   // TODO: Actually figure out how to read the data from the chip.
   
   // TODO test that data[x] << 8 will be promoted to 16bits otherwise I'm shifting them to just zeros
@@ -28,6 +28,7 @@ dht22_error dht22_read() {
   if (checksum_val != data[4]) {
     _dht22_relative_humidity = UINT16_MAX;
     _dht22_temperature = INT16_MIN;
+    ESP_LOGE(TAG, "Error in final checksum check");
     return DHT22_CHECKSUM_ERROR;
   }
   

main/main.c

@@ -1,4 +1,4 @@
-/*
+/**
  * Author: Arthur Roberts (c) 2023
  *
  * License: GPLv3+
@@ -8,11 +8,31 @@
 #include "freertos/FreeRTOS.h"
 #include "freertos/task.h"
 #include "dht22.h"
+#include "esp_log.h"
+#include "esp_wifi.h"
+
+static const char *TAG = "YASPAM";
+
+struct air_monitor_data {
+#ifdef CONFIG_DHT22_DATA_GPIO
+  deci_percent   dht22_relative_humidity;
+  deci_degrees_c dht22_temperature;
+#endif /* CONFIG_DHT22_DATA_GPIO */
+
+#ifdef CONFIG_PMS5003_DATA_GPIO
+  // TODO
+#endif /* CONFIG_PMS5003_DATA_GPIO */
+  int64_t time; // TODO think about how best to store this.
+};
 
 void app_main(void)
 {
-  int ret = dht22_temperature();
-  printf("Hello world! - dhtRet: %i\n", ret);
+#ifdef CONFIG_DHT22_DATA_GPIO
+  int ret = dht22_read();
+#endif /* CONFIG_DHT22_DATA_GPIO */
+
+  
+  
   for (int i = 10; i >= 0; i--) {
       printf("Restarting in %d seconds...\n", i);
       vTaskDelay(1000 / portTICK_PERIOD_MS);