diff --git a/main.c b/main.c
index 6667c99..b0f99f9 100644
--- a/main.c
+++ b/main.c
@@ -11,14 +11,16 @@
 #include <stdio.h>
 #include <string.h>
 
-static const uint I2C_SLAVE_ADDRESS = 0x17;
+static const uint I2C_SLAVE_ADDRESS = 0x09;
 static const uint I2C_BAUDRATE = 100000; // 100 kHz
 
+uint reception;
+
 #ifdef i2c_default
 // For this example, we run both the master and slave from the same board.
 // You'll need to wire pin GP4 to GP6 (SDA), and pin GP5 to GP7 (SCL).
-static const uint I2C_SLAVE_SDA_PIN = 19; // 4
-static const uint I2C_SLAVE_SCL_PIN = 18; // 5
+static const uint I2C_SLAVE_SDA_PIN = 17; // 17
+static const uint I2C_SLAVE_SCL_PIN = 16; // 16
 static const uint I2C_MASTER_SDA_PIN = 6;
 static const uint I2C_MASTER_SCL_PIN = 7;
 
@@ -55,6 +57,7 @@ static void i2c_slave_handler(i2c_inst_t *i2c, i2c_slave_event_t event) {
         break;
     case I2C_SLAVE_FINISH: // master has signalled Stop / Restart
         context.mem_address_written = false;
+        reception++;
         break;
     default:
         break;
@@ -70,9 +73,9 @@ static void setup_slave() {
     gpio_set_function(I2C_SLAVE_SCL_PIN, GPIO_FUNC_I2C);
     gpio_pull_up(I2C_SLAVE_SCL_PIN);
 
-    i2c_init(i2c1, I2C_BAUDRATE);
+    i2c_init(i2c0, I2C_BAUDRATE);
     // configure I2C1 for slave mode
-    i2c_slave_init(i2c1, I2C_SLAVE_ADDRESS, &i2c_slave_handler);
+    i2c_slave_init(i2c0, I2C_SLAVE_ADDRESS, &i2c_slave_handler);
 }
 
 #endif
@@ -90,8 +93,13 @@ int main() {
     setup_slave();
     //run_master();
     while(1){
-        puts("\nI2C slave example\n");
-        sleep_ms(1000);
+        if(reception != 0){
+            puts("reception != 0\n");
+            reception = 0;
+            printf(">a:%d\n", context.mem[0]);
+        }
+        puts("I2C slave example\n");
+        sleep_ms(10);
     }
 #endif
 }
\ No newline at end of file