Restore logging, make WiFi creds settable from make

tutorials/rp/pico-rm2/CMakeLists.txt

@@ -16,3 +16,12 @@ pico_enable_stdio_usb(firmware 1)    # Route stdio to USB
 
 # Prevent extreme optimization from breaking OTA
 target_compile_options(firmware PRIVATE -fno-tree-loop-distribute-patterns)
+
+# Wi-Fi credentials from the environment, e.g. make WIFI_NAME=... WIFI_PASS=...
+# Read when build/ is configured: run "make clean" after changing them
+if (DEFINED ENV{WIFI_NAME})
+  target_compile_definitions(firmware PRIVATE "WIFI_SSID=\"$ENV{WIFI_NAME}\"")
+endif()
+if (DEFINED ENV{WIFI_PASS})
+  target_compile_definitions(firmware PRIVATE "WIFI_PASS=\"$ENV{WIFI_PASS}\"")
+endif()

tutorials/rp/pico-rm2/main.c

@@ -16,10 +16,16 @@ static void http_ev_handler(struct mg_connection *c, int ev, void *ev_data) {
   }
 }
 
+static void log_fn(char ch, void *param) {
+  (void) param;
+  putchar(ch);
+}
+
 // In an RTOS environment, give this task 8 KB of stack space.
 static void run_mongoose(void) {
   void driver_init(struct mg_mgr *mgr);
   struct mg_mgr mgr;
+  mg_log_set_fn(log_fn, NULL);
   mg_mgr_init(&mgr);
   driver_init(&mgr);
   mg_log_set(MG_LL_DEBUG);  // Set log level

tutorials/rp/pico-rm2/wifi.c

@@ -4,8 +4,13 @@
 #include "hardware/pio.h"
 #include "mongoose.h"
 
-#define WIFI_SSID "YOUR_WIFI_NETWORK_NAME"  // SET THIS!
-#define WIFI_PASS "YOUR_WIFI_PASSWORD"      // SET THIS!
+// Set these, or pass on the command line: make WIFI_NAME=... WIFI_PASS=...
+#ifndef WIFI_SSID
+#define WIFI_SSID "YOUR_WIFI_NETWORK_NAME"
+#endif
+#ifndef WIFI_PASS
+#define WIFI_PASS "YOUR_WIFI_PASSWORD"
+#endif
 
 #define SPIPIO pio0
 #define SPISM 0