WIP: Added gpio for reset pin. Rolled dice - it's gpio 5.

third_party/mfrc522_integration/mfrc522_rp2040_integration.c

@@ -43,6 +43,8 @@
 
 #include "driver_mfrc522_interface.h"
 
+#define MFRC522_CFG_N_GPIO  5
+
 /**
  * @brief  interface reset gpio init
  * @return status code
@@ -52,6 +54,8 @@
  */
 uint8_t mfrc522_interface_reset_gpio_init(void)
 {
+    gpio_init(MFRC522_CFG_N_GPIO);
+    gpio_set_dir(MFRC522_CFG_N_GPIO, GPIO_OUT);
     return 0;
 }
 
@@ -64,6 +68,7 @@ uint8_t mfrc522_interface_reset_gpio_init(void)
  */
 uint8_t mfrc522_interface_reset_gpio_deinit(void)
 {
+    gpio_deinit(MFRC522_CFG_N_GPIO);
     return 0;
 }
 
@@ -77,6 +82,7 @@ uint8_t mfrc522_interface_reset_gpio_deinit(void)
  */
 uint8_t mfrc522_interface_reset_gpio_write(uint8_t value)
 {
+    gpio_put(MFRC522_CFG_N_GPIO, !!value);
     return 0;
 }