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esp32: use semaphore to let VHCI task pause until packet is processed by btstack

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This commit is contained in:
Matthias Ringwald 2017-03-06 22:00:31 +01:00
parent 17b3e0b8c9
commit 8d8a3c37fb
1 changed files with 16 additions and 3 deletions
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19
port/esp32/main/main.c
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@ -53,6 +53,7 @@
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/semphr.h"
uint32_t esp_log_timestamp();
@ -71,6 +72,8 @@ static int _can_send_packet_now = 1;
static uint8_t * received_packet_data;
static uint16_t received_packet_len;
static SemaphoreHandle_t packet_handled_notify;
static void (*transport_packet_handler)(uint8_t packet_type, uint8_t *packet, uint16_t size);
// executed on main run loop
@ -78,6 +81,9 @@ static void transport_deliver_packet(void *arg){
log_info("transport_deliver_packet len %u", received_packet_len);
// deliver packet
transport_packet_handler(received_packet_data[0], &received_packet_data[1], received_packet_len-1);
log_info("transport_deliver_packet done");
// signal bluetooth task to continue
xSemaphoreGive(packet_handled_notify);
}
// executed on main run loop
@ -87,19 +93,23 @@ static void transport_notify_packet_send(void *arg){
transport_packet_handler(HCI_EVENT_PACKET, &event[0], sizeof(event));
}
// run from VHCI Task
static void host_send_pkt_available_cb(void){
_can_send_packet_now = 1;
log_debug("host_send_pkt_available_cb, setting _can_send_packet_now = %u", _can_send_packet_now);
// log_debug("host_send_pkt_available_cb, setting _can_send_packet_now = %u", _can_send_packet_now);
// notify upper stack that provided buffer can be used again
btstack_run_loop_freertos_single_threaded_execute_code_on_main_thread(&transport_notify_packet_send, NULL);
}
// run from VHCI Task
static int host_recv_pkt_cb(uint8_t *data, uint16_t len){
printf("host_recv_pkt_cb: %u bytes\n", len);
// log_info("host_recv_pkt_cb: %u bytes, type %u, begins %02x %02x", len, data[0], data[1], data[2]);
received_packet_data = data;
received_packet_len = len;
// probably will need mutex here
btstack_run_loop_freertos_single_threaded_execute_code_on_main_thread(&transport_deliver_packet, NULL);
// wait until processed
xSemaphoreTake(packet_handled_notify, portMAX_DELAY);
return 0;
}
@ -124,6 +134,9 @@ static int transport_open(void){
log_info("transport_open");
// create
packet_handled_notify = xSemaphoreCreateBinary();
esp_bt_controller_init();
ret = esp_bt_controller_enable(ESP_BT_MODE_BTDM);
@ -153,7 +166,7 @@ static void transport_register_packet_handler(void (*handler)(uint8_t packet_typ
}
static int transport_can_send_packet_now(uint8_t packet_type) {
log_debug("transport_can_send_packet_now %u, esp_vhci_host_check_send_available %u\n", _can_send_packet_now, esp_vhci_host_check_send_available());
log_debug("transport_can_send_packet_now %u, esp_vhci_host_check_send_available %u", _can_send_packet_now, esp_vhci_host_check_send_available());
return _can_send_packet_now;
}