dhcp attempts

include/config.h

@@ -0,0 +1,25 @@
+#ifndef CONFIG_H
+#define CONFIG_H
+
+#include <stdint.h>
+
+#define DEBUG_MODE 1
+
+#define DNS_RUN_INTERVAL_MS 100
+
+// #define LOCAL_PORT 5000
+
+// MQTT configuration
+#define CLIENT_ID "ch32_node"
+
+#define MQTT_TARGET_IP {192, 168, 102, 147}
+#define MQTT_TARGET_PORT 1883
+
+#define MQTT_KEEP_ALIVE_INTERVAL 60
+#define MQTT_TX_BUFFER_SIZE 128
+#define MQTT_RX_BUFFER_SIZE 128
+#define MQTT_COMMAND_TIMEOUT_MS 1000
+#define SUB_TOPIC "listen/world"
+#define PUB_TOPIC "hello/world"
+
+#endif  // CONFIG_H

include/debug.h

@@ -0,0 +1,14 @@
+#ifndef DEBUG_H
+#define DEBUG_H
+
+#include <stdio.h>
+
+#include "config.h"
+
+#ifdef DEBUG_MODE
+#define DEBUG_PRINT(fmt, ...) printf(fmt, ##__VA_ARGS__)
+#else
+#define DEBUG_PRINT(fmt, ...)
+#endif
+
+#endif  // DEBUG_H

include/systick.h

@@ -0,0 +1,14 @@
+#ifndef SYSTICK_H
+#define SYSTICK_H
+
+#include <stdint.h>
+
+#define SYSTICK_ONE_MILLISECOND ((uint32_t)FUNCONF_SYSTEM_CORE_CLOCK / 1000)
+#define millis() (systick_millis)
+
+void systick_init(void);
+
+// ms counter incremented by SysTick
+extern volatile uint32_t systick_millis;
+
+#endif  // SYSTICK_H

include/w5500.h

@@ -1,25 +1,25 @@
 #ifndef W5500_H
 #define W5500_H
 
+#include <MQTT/MQTTClient.h>
 #include <stdint.h>
 
-// Sets the CS pin low
-void w5500_select(void);
+// Definitions for socket indexes
+#define DHCP_SOCKET 0
+#define DNS_SOCKET 1
+#define TCP_SOCKET 2
 
-// Sets the CS pin high
-void w5500_unselect(void);
+// Options structure for client identification
+typedef struct {
+  char* clientid;
+  char* username;
+  char* password;
+  int qos;
+} ch32_mqtt_options_t;
 
-// Reads a byte via SPI
-uint8_t w5500_read_byte(void);
+extern volatile int ip_assigned;
 
-// Writes a byte via SPI
-void w5500_write_byte(uint8_t byte);
-
-// Reads multiple bytes via SPI
-void w5500_read_buffer(uint8_t* buff, uint16_t len);
-
-// Writes multiple bytes via SPI
-void w5500_write_buffer(uint8_t* buff, uint16_t len);
+void handle_ip_assigned(void);
 
 // Initializes the W5500 chip
 void configure_network(void);
@@ -27,4 +27,14 @@ void configure_network(void);
 // resolves a domain name
 void resolve_domain_name(const char* domain_name);
 
+// init and connect the MQTT client
+MQTTClient setup_mqtt_client(Network* network, ch32_mqtt_options_t* opts);
+
+int subscribe_to_topic(MQTTClient* client, const char* topic, enum QoS qos,
+                       messageHandler message_callback);
+
+// publish a message to a topic
+void publish_message(MQTTClient* client, const char* payload,
+                     const char* topic);
+
 #endif  // W5500_H