1 files changed, 19 insertions, 0 deletions
diff --git a/recipes-bsp/esp32spid/src/msgq.h b/recipes-bsp/esp32spid/src/msgq.h
new file mode 100644
index 0000000..665be32
--- /dev/null
+++ b/recipes-bsp/esp32spid/src/msgq.h
@@ -0,0 +1,19 @@
+#include <stdint.h>
+
+#define MSGQ_OK		0
+#define MSGQ_ERR	-1
+#define MSGQ_ERR_FULL	-10
+
+typedef struct MSGQueue {
+    uint16_t idx_r;
+    uint16_t idx_w;
+    uint16_t size;
+    unsigned char **array;
+    pthread_mutex_t mutex;
+    pthread_cond_t cond;
+} MSGQueue;
+
+int msgq_init(MSGQueue *msgq, unsigned char **array, uint16_t size);
+int msgq_push(MSGQueue *msgq, unsigned char *buffer);
+unsigned char *msgq_pop(MSGQueue *msgq);
+uint16_t msgq_len(MSGQueue *msgq);