Add W6300 ethernet initialization

picomap.cpp

@@ -3,6 +3,11 @@
 #include "pico/bootrom.h"
 #include "device.h"
 
+extern "C" {
+#include "wizchip_conf.h"
+#include "wizchip_spi.h"
+}
+
 static void send_bytes(const std::vector<uint8_t> &data) {
     for (auto b : data) {
         putchar(b);
@@ -10,9 +15,21 @@ static void send_bytes(const std::vector<uint8_t> &data) {
     stdio_flush();
 }
 
+static bool w6300_init() {
+    wizchip_spi_initialize();
+    wizchip_cris_initialize();
+    wizchip_reset();
+    wizchip_initialize();
+    return getCIDR() == 0x6300;
+}
+
 int main() {
     stdio_init_all();
 
+    if (!w6300_init()) {
+        printf("W6300 init failed\n");
+    }
+
     static static_vector<uint8_t, 256> rx_buf;
 
     while (true) {