diff --git a/src/blink_test.c b/src/blink_test.c
index 6d19544..9cf3423 100644
--- a/src/blink_test.c
+++ b/src/blink_test.c
@@ -2,14 +2,18 @@
 #include "pico/stdlib.h"
 
 #define TEST_GPIO 8
+#define TEST_GPIO2 5
 
 int main() {
   stdio_init_all();
   gpio_init(TEST_GPIO);
+  gpio_init(TEST_GPIO2);
   gpio_set_dir(TEST_GPIO, GPIO_OUT);
+  gpio_set_dir(TEST_GPIO2, GPIO_OUT);
   bool val = true;
   while (true) {
     gpio_put(TEST_GPIO, val);
+    gpio_put(TEST_GPIO2, val);
     val = !val;
     sleep_ms(25);
   }
diff --git a/src/spi_test.c b/src/spi_test.c
index c070d14..3690a18 100644
--- a/src/spi_test.c
+++ b/src/spi_test.c
@@ -38,7 +38,7 @@ static void spi_register_read(uint16_t address, uint8_t *buf, uint16_t len) {
   cmd[0] &= ~(3 << 6); // mask out top two bits
   cs_select();
   spi_write_blocking(SPI, cmd, 2);
-  spi_read_blocking(SPI, 0, buf, len);
+  spi_read_blocking(SPI, 0x00, buf, len);
   cs_deselect();
 }
 
@@ -54,6 +54,7 @@ int main() {
   gpio_set_dir(PICO_DEFAULT_SPI_CSN_PIN, GPIO_OUT);
   gpio_put(PICO_DEFAULT_SPI_CSN_PIN, 1);
 
+  gpio_init(AT86_RSTN);
   gpio_set_dir(AT86_RSTN, GPIO_OUT);
   gpio_put(AT86_RSTN, 1);