pbio/drv/bluetooth_btstack: Add poll hook.

This is needed for the POSIX port, which needs to poll files.

Author: laurensvalk

lib/pbio/drv/bluetooth/bluetooth_btstack.c

@@ -1035,6 +1035,8 @@ static pbio_error_t pbdrv_bluetooth_hci_process_thread(pbio_os_state_t *state, v
         btstack_run_loop_base_poll_data_sources();
     }
 
+    pbdrv_bluetooth_btstack_platform_poll();
+
     static pbio_os_timer_t btstack_timer = {
         .duration = 1,
     };

lib/pbio/drv/bluetooth/bluetooth_btstack.h

@@ -22,6 +22,11 @@
  */
 pbio_error_t pbdrv_bluetooth_btstack_platform_init(void);
 
+/**
+ * Optional platform poll handler, called on every process iteration.
+ */
+void pbdrv_bluetooth_btstack_platform_poll(void);
+
 /** Chipset info */
 typedef struct {
     /** Version */

lib/pbio/drv/bluetooth/bluetooth_btstack_ev3.c

@@ -70,6 +70,9 @@ pbio_error_t pbdrv_bluetooth_btstack_platform_init(void) {
     return PBIO_SUCCESS;
 }
 
+void pbdrv_bluetooth_btstack_platform_poll(void) {
+}
+
 void pbdrv_bluetooth_btstack_set_chipset(uint16_t lmp_pal_subversion) {
     const pbdrv_bluetooth_btstack_chipset_info_t *info = lmp_pal_subversion == cc2560_info.lmp_version ?
         &cc2560_info : &cc2560a_info;

lib/pbio/drv/bluetooth/bluetooth_btstack_stm32_hal.c

@@ -30,6 +30,9 @@ pbio_error_t pbdrv_bluetooth_btstack_platform_init(void) {
     return PBIO_SUCCESS;
 }
 
+void pbdrv_bluetooth_btstack_platform_poll(void) {
+}
+
 void pbdrv_bluetooth_btstack_set_chipset(uint16_t lmp_pal_subversion) {
 
     const pbdrv_bluetooth_btstack_platform_data_t *pdata =

lib/pbio/test/drv/test_bluetooth_btstack.c

@@ -777,6 +777,9 @@ pbio_error_t pbdrv_bluetooth_btstack_platform_init(void) {
     return PBIO_SUCCESS;
 }
 
+void pbdrv_bluetooth_btstack_platform_poll(void) {
+}
+
 static pbio_error_t test_btstack_run_loop_contiki_poll(pbio_os_state_t *state, void *context) {
     static btstack_data_source_t data_source;
     static uint32_t callback_count;