6 files changed, 88 insertions, 27 deletions
diff --git a/main/CMakeLists.txt b/main/CMakeLists.txt
index 70cd901..4c17fba 100644
--- a/main/CMakeLists.txt
+++ b/main/CMakeLists.txt
@@ -9,6 +9,7 @@ include(lib/pico-sdk/pico_sdk_init.cmake)
 include(lib/FreeRTOS-Kernel/portable/ThirdParty/GCC/RP2040/FreeRTOS_Kernel_import.cmake)
 add_subdirectory(lib/mpack)
 add_subdirectory(lib/i2ctcp)
+add_subdirectory(lib/pbdrv)
 
 project(puzzlebox_main C CXX ASM)
 
@@ -36,5 +37,6 @@ target_link_libraries(main
 	FreeRTOS-Kernel-Heap4
 	i2ctcp
 	mpack
+	pbdrv-mod
 	)
 
diff --git a/main/config.def.h b/main/config.def.h
index 7fcaed9..11612eb 100644
--- a/main/config.def.h
+++ b/main/config.def.h
@@ -1,17 +1,66 @@
 #pragma once
 #include <pico/cyw43_arch.h>
+#include <cyw43_country.h>
 
-// wifi credentials
-#define CONF_NET_SSID "network name"
-#define CONF_NET_PASS "network password"
-#define CONF_NET_AUTH CYW43_AUTH_WPA2_AES_PSK
-// max duration (milliseconds) for establishing wifi connection
-#define CONF_NET_CONN_TIMEOUT 10e3
+/**
+ * \name Network (Wi-Fi) configuration
+ * \{
+ */
+#ifndef CFG_NET_DISABLE
 
-#include <cyw43_country.h>
-#define CONF_NET_COUNTRY CYW43_COUNTRY_NETHERLANDS
+#ifndef CFG_NET_SSID
+//! network name (SSID)
+#define CFG_NET_SSID ""
+//! disable network communication
+#define CFG_NET_DISABLE
+#warning No SSID defined! Disabling network communication!
+#endif
+
+#ifndef CFG_NET_PASS
+//! network password
+#define CFG_NET_PASS ""
+#endif
+
+#ifndef CFG_NET_AUTH
+//! network security type
+#define CFG_NET_AUTH CYW43_AUTH_OPEN
+#endif
+
+#ifndef CFG_NET_CONN_TIMEOUT
+//! max duration (milliseconds) for establishing wifi connection
+#define CFG_NET_CONN_TIMEOUT 10e3
+#endif
+
+#ifndef CFG_NET_COUNTRY
+//! radio communications country
+#define CFG_NET_COUNTRY CYW43_COUNTRY_NETHERLANDS
+#endif
+
+#else // ifndef CFG_NET_DISABLE
+
+#undef CFG_NET_COUNTRY
+#define CFG_NET_COUNTRY CYW43_COUNTRY_WORLDWIDE
+
+#endif // ifndef CFG_NET_DISABLE
+/** \} */
+
+/**
+ * \name i2ctcp server configuration
+ * \{
+ */
+#ifndef CFG_SRV_PORT
+//! i2ctcp server port
+#define CFG_SRV_PORT 9191
+#endif
 
-#define CONF_SRV_PORT 9191
+#ifndef CFG_NET_DISABLE
+//! disable the i2ctcp server
+#define CFG_SRV_DISABLE
+#endif
+/** \} */
 
-#define LED_PIN CYW43_WL_GPIO_LED_PIN
+#ifndef CFG_LED_PIN
+//! status LED pin
+#define CFG_LED_PIN CYW43_WL_GPIO_LED_PIN
+#endif
 
diff --git a/main/init.c b/main/init.c
index 08177c7..90f0b1e 100644
--- a/main/init.c
+++ b/main/init.c
@@ -16,7 +16,7 @@ static void init_stdio() {
 }
 
 static void init_cyw34() {
-	if (cyw43_arch_init_with_country(CONF_NET_COUNTRY))
+	if (cyw43_arch_init_with_country(CFG_NET_COUNTRY))
 		panic("cyw43_arch_init_with_country failed\n");
 }
 
@@ -24,8 +24,8 @@ static void init_wifi() {
 	// enable 'station' mode (connect to an access point instead of acting like one)
 	cyw43_arch_enable_sta_mode();
 
-	// if (cyw43_arch_wifi_connect_timeout_ms(CONF_NET_SSID, CONF_NET_PASS, CONF_NET_AUTH, CONF_NET_CONN_TIMEOUT))
-	// 	panic("cyw43_arch_wifi_connect failed\n");
+	if (cyw43_arch_wifi_connect_timeout_ms(CFG_NET_SSID, CFG_NET_PASS, CFG_NET_AUTH, CFG_NET_CONN_TIMEOUT))
+		panic("cyw43_arch_wifi_connect failed\n");
 
 	printf("connected to Wi-Fi\n");
 
@@ -35,7 +35,9 @@ static void init_wifi() {
 static void async_init() {
 	init_cyw34();
 	init_i2c();
+#ifndef CFG_NET_DISABLE
 	init_wifi();
+#endif
 
 	xEventGroupSetBits(init_complete, 1);
 
diff --git a/main/main.c b/main/main.c
index 19dd3cd..9fefed5 100644
--- a/main/main.c
+++ b/main/main.c
@@ -13,9 +13,9 @@ void blink_task() {
 	await_init(); // `blink_task` uses GPIO
 
 	while (true) {
-		cyw43_arch_gpio_put(LED_PIN, 0);
+		cyw43_arch_gpio_put(CFG_LED_PIN, 0);
 		vTaskDelay(250 / portTICK_PERIOD_MS);
-		cyw43_arch_gpio_put(LED_PIN, 1);
+		cyw43_arch_gpio_put(CFG_LED_PIN, 1);
 		vTaskDelay(250 / portTICK_PERIOD_MS);
 	}
 }
@@ -24,7 +24,9 @@ int main() {
 	init();
 
 	xTaskCreate((TaskFunction_t) blink_task, "blink", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY + 2, NULL);
-	//xTaskCreate((TaskFunction_t) serve_task, "serve", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY + 2, NULL);
+#ifndef CFG_SRV_DISABLE
+	xTaskCreate((TaskFunction_t) serve_task, "serve", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY + 2, NULL);
+#endif
 	xTaskCreate((TaskFunction_t) bus_task, "bus", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY + 2, NULL);
 
 	vTaskStartScheduler();
diff --git a/main/readme.md b/main/readme.md
index 425a00b..28fcfad 100644
--- a/main/readme.md
+++ b/main/readme.md
@@ -5,17 +5,23 @@ This directory contains the software for the main controller of the Puzzle Box.
 ## building
 
 1. make sure the submodules are initialized
-2. copy [`config.def.h`](./config.def.h) to `config.h` and edit the defaults
-3. `mkdir build`
-4. `cmake -B build`
-5. `make -C build` or `ninja -C build` (choose your preference)
+2. create a `config.h` file and define some options (see `config.def.h` for all
+   options):
+   ```c
+   #pragma once
 
-alternatively, a makefile is provided for convenience
+   #define CFG_NET_SSID "network name"
+   #define CFG_NET_PASS "network password"
+   #define CFG_NET_AUTH CYW43_AUTH_WPA2_AES_PSK
 
-## "flashing"
+   #include "config.def.h"
+   ```
+3. use CMake to build
 
-1. [build](#building)
-2. (re)connect the raspberry pi pico while holding the BOOTSEL button (this is
-   the only button)
+## flashing
+
+1. build
+2. hold the BOOTSEL button while resetting the pico (by power cycling or
+   pulling pin 30 (RUN) to GND)
 3. `picotool load build/main.uf2`
 
diff --git a/main/sock.c b/main/sock.c
index fe932bb..dc3d7ea 100644
--- a/main/sock.c
+++ b/main/sock.c
@@ -83,10 +83,10 @@ void serve_task() {
 
 	printf("starting server...\n");
 	struct netconn* conn = netconn_new(NETCONN_TCP);
-	netconn_bind(conn, IP_ADDR_ANY, CONF_SRV_PORT);
+	netconn_bind(conn, IP_ADDR_ANY, CFG_SRV_PORT);
 	netconn_listen(conn);
 
-	printf("listening on %s:%d\n", ip4addr_ntoa(netif_ip4_addr(netif_list)), CONF_SRV_PORT);
+	printf("listening on %s:%d\n", ip4addr_ntoa(netif_ip4_addr(netif_list)), CFG_SRV_PORT);
 	while (1) {
 		struct netconn* incoming;
 		if (netconn_accept(conn, &incoming) == ERR_OK)