The ESP32 code:
Code: Select all
#include <stdint.h>
#include <string.h>
#include <stdbool.h>
#include <stdio.h>
#include "nvs.h"
#include "nvs_flash.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "esp_log.h"
#include "esp_bt.h"
#include "esp_bt_main.h"
#include "esp_gap_bt_api.h"
#include "esp_bt_device.h"
#include "esp_spp_api.h"
#define SPP_TAG "SPP_ACCEPTOR_DEMO"
#define SPP_SERVER_NAME "SPP_SERVER"
#define EXAMPLE_DEVICE_NAME "ESP_SPP_ACCEPTOR"
static const esp_spp_mode_t esp_spp_mode = ESP_SPP_MODE_CB;
static const esp_spp_sec_t sec_mask = ESP_SPP_SEC_NONE;
static const esp_spp_role_t role_slave = ESP_SPP_ROLE_SLAVE;
static void esp_spp_cb(esp_spp_cb_event_t event, esp_spp_cb_param_t *param)
{
switch (event) {
case ESP_SPP_INIT_EVT:
ESP_LOGI(SPP_TAG, "ESP_SPP_INIT_EVT");
esp_bt_dev_set_device_name(EXAMPLE_DEVICE_NAME);
esp_bt_gap_set_scan_mode(ESP_BT_SCAN_MODE_CONNECTABLE_DISCOVERABLE);
esp_spp_start_srv(sec_mask,role_slave, 0, SPP_SERVER_NAME);
break;
case ESP_SPP_DISCOVERY_COMP_EVT:
ESP_LOGI(SPP_TAG, "ESP_SPP_DISCOVERY_COMP_EVT");
break;
case ESP_SPP_OPEN_EVT:
ESP_LOGI(SPP_TAG, "ESP_SPP_OPEN_EVT");
break;
case ESP_SPP_CLOSE_EVT:
ESP_LOGI(SPP_TAG, "ESP_SPP_CLOSE_EVT");
break;
case ESP_SPP_START_EVT:
ESP_LOGI(SPP_TAG, "ESP_SPP_START_EVT");
break;
case ESP_SPP_CL_INIT_EVT:
ESP_LOGI(SPP_TAG, "ESP_SPP_CL_INIT_EVT");
break;
case ESP_SPP_DATA_IND_EVT:
ets_delay_us (50);
ESP_LOGI(SPP_TAG, "ESP_SPP_DATA_IND_EVT len=%d handle=%d",
param->data_ind.len, param->data_ind.handle);
if (param->data_ind.len < 1023) {
esp_spp_write(param->write.handle, (size_t)param->data_ind.len, (uint8_t *)param->data_ind.data);
}
else {
esp_log_buffer_hex("",param->data_ind.data,param->data_ind.len);
}
break;
case ESP_SPP_CONG_EVT:
ESP_LOGI(SPP_TAG, "ESP_SPP_CONG_EVT");
break;
case ESP_SPP_WRITE_EVT:
ESP_LOGI(SPP_TAG, "ESP_SPP_WRITE_EVT");
break;
case ESP_SPP_SRV_OPEN_EVT:
ESP_LOGI(SPP_TAG, "ESP_SPP_SRV_OPEN_EVT");
break;
default:
break;
}
}
void app_main()
{
esp_err_t ret = nvs_flash_init();
if (ret == ESP_ERR_NVS_NO_FREE_PAGES) {
ESP_ERROR_CHECK(nvs_flash_erase());
ret = nvs_flash_init();
}
ESP_ERROR_CHECK( ret );
esp_bt_controller_config_t bt_cfg = BT_CONTROLLER_INIT_CONFIG_DEFAULT();
if (esp_bt_controller_init(&bt_cfg) != ESP_OK) {
ESP_LOGE(SPP_TAG, "%s initialize controller failed\n", __func__);
return;
}
if (esp_bt_controller_enable(ESP_BT_MODE_CLASSIC_BT) != ESP_OK) {
ESP_LOGE(SPP_TAG, "%s enable controller failed\n", __func__);
return;
}
if (esp_bluedroid_init() != ESP_OK) {
ESP_LOGE(SPP_TAG, "%s initialize bluedroid failed\n", __func__);
return;
}
if (esp_bluedroid_enable() != ESP_OK) {
ESP_LOGE(SPP_TAG, "%s enable bluedroid failed\n", __func__);
return;
}
if (esp_spp_register_callback(esp_spp_cb) != ESP_OK) {
ESP_LOGE(SPP_TAG, "%s spp register failed\n", __func__);
return;
}
if (esp_spp_init(esp_spp_mode) != ESP_OK) {
ESP_LOGE(SPP_TAG, "%s spp init failed\n", __func__);
return;
}
}
Code: Select all
#include <stdio.h>
#include <windows.h>
int main() {
char buffer[1];
HANDLE file;
COMMTIMEOUTS timeouts;
DWORD read, written;
DCB port;
char send[] = "s"; // char to send
// open the comm port.
file = CreateFile("\\\\.\\COM12", // the slashes and period are only needed for com ports above 9
GENERIC_READ | GENERIC_WRITE,
0,
NULL,
OPEN_EXISTING,
0,
NULL);
if (file == INVALID_HANDLE_VALUE)
printf("Error in opening serial port\n");
else
printf("opening serial port successful\n");
// get the current DCB, and adjust
memset(&port, 0, sizeof(port));
port.DCBlength = sizeof(port);
GetCommState(file, &port);
BuildCommDCB("baud=9600 parity=n data=8 stop=1", &port);
SetCommState(file, &port);
// set short timeouts on the comm port.
timeouts.ReadIntervalTimeout = 10;
timeouts.ReadTotalTimeoutMultiplier = 10;
timeouts.ReadTotalTimeoutConstant = 10;
timeouts.WriteTotalTimeoutMultiplier = 10;
timeouts.WriteTotalTimeoutConstant = 10;
SetCommTimeouts(file, &timeouts);
WriteFile(file, send, sizeof(send), &written, NULL); // esp32 echoes only. this first character gets the process started.
int frame = 200; int y = 0;
while (frame)
{
ReadFile(file, buffer, sizeof(buffer), &read, NULL);
if (read)
{
printf("frame:%d", frame);
printf(" buffer:%c\n", buffer[0]);
WriteFile(file, send, sizeof(send), &written, NULL);
frame--; y = 0;
}
else y++;
if (y > 30) // if after y attempts to read port with no data...
{
printf("could not communicate with port, exiting...\n");
frame = 0;
}
}
CloseHandle(file);
}
Code: Select all
opening serial port successful
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could not communicate with port, exiting...
Code: Select all
I (31) boot: ESP-IDF v3.2.2-dirty 2nd stage bootloader
I (31) boot: compile time 18:02:48
I (31) boot: Enabling RNG early entropy source...
I (36) boot: SPI Speed : 40MHz
I (40) boot: SPI Mode : DIO
I (44) boot: SPI Flash Size : 4MB
I (48) boot: Partition Table:
I (51) boot: ## Label Usage Type ST Offset Length
I (59) boot: 0 nvs WiFi data 01 02 00009000 00006000
I (66) boot: 1 phy_init RF data 01 01 0000f000 00001000
I (74) boot: 2 factory factory app 00 00 00010000 00100000
I (81) boot: End of partition table
I (85) esp_image: segment 0: paddr=0x00010020 vaddr=0x3f400020 size=0x21c78 (138360) map
I (143) esp_image: segment 1: paddr=0x00031ca0 vaddr=0x3ffbdb60 size=0x028e4 ( 10468) load
I (147) esp_image: segment 2: paddr=0x0003458c vaddr=0x40080000 size=0x00400 ( 1024) load
0x40080000: _WindowOverflow4 at C:/msys32/home/Peter/esp/esp-idf/components/freertos/xtensa_vectors.S:1779
I (150) esp_image: segment 3: paddr=0x00034994 vaddr=0x40080400 size=0x0b67c ( 46716) load
I (178) esp_image: segment 4: paddr=0x00040018 vaddr=0x400d0018 size=0x7337c (471932) map
0x400d0018: _flash_cache_start at ??:?
I (343) esp_image: segment 5: paddr=0x000b339c vaddr=0x4008ba7c size=0x06bc4 ( 27588) load
0x4008ba7c: r_rwbtdm_isr_wrapper at intc.c:?
I (366) boot: Loaded app from partition at offset 0x10000
I (366) boot: Disabling RNG early entropy source...
I (366) cpu_start: Pro cpu up.
I (370) cpu_start: Starting app cpu, entry point is 0x4008101c
0x4008101c: call_start_cpu1 at C:/msys32/home/Peter/esp/esp-idf/components/esp32/cpu_start.c:246
I (0) cpu_start: App cpu up.
I (380) heap_init: Initializing. RAM available for dynamic allocation:
I (387) heap_init: At 3FFAFF10 len 000000F0 (0 KiB): DRAM
I (393) heap_init: At 3FFB6388 len 00001C78 (7 KiB): DRAM
I (399) heap_init: At 3FFB9A20 len 00004108 (16 KiB): DRAM
I (405) heap_init: At 3FFBDB5C len 00000004 (0 KiB): DRAM
I (412) heap_init: At 3FFCCB78 len 00013488 (77 KiB): DRAM
I (418) heap_init: At 3FFE0440 len 00003AE0 (14 KiB): D/IRAM
I (424) heap_init: At 3FFE4350 len 0001BCB0 (111 KiB): D/IRAM
I (430) heap_init: At 40092640 len 0000D9C0 (54 KiB): IRAM
I (437) cpu_start: Pro cpu start user code
I (7) cpu_start: Starting scheduler on PRO CPU.
I (0) cpu_start: Starting scheduler on APP CPU.
I (54) BTDM_INIT: BT controller compile version [d53bd19]
I (54) system_api: Base MAC address is not set, read default base MAC address from BLK0 of EFUSE
I (134) phy: phy_version: 4008, 544f89f, Jan 24 2019, 14:54:06, 0, 0
I (464) SPP_ACCEPTOR_DEMO: ESP_SPP_INIT_EVT
I (464) SPP_ACCEPTOR_DEMO: ESP_SPP_START_EVT
W (10314) BT_APPL: new conn_srvc id:26, app_id:255
I (10314) SPP_ACCEPTOR_DEMO: ESP_SPP_SRV_OPEN_EVT
I (10344) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10354) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (10354) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10354) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10364) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (10364) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (10394) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10394) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10394) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10404) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10404) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (10414) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (10414) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (10424) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (10424) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10434) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10444) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10444) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10454) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10464) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10464) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10474) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10494) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (10494) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10504) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (10504) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10514) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (10514) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (10524) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (10524) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (10534) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10534) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10544) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10554) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10554) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10564) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (10574) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10574) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10584) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10594) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (10594) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10604) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10614) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10614) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10624) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10634) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10644) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (10644) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10654) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10684) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (10684) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (10684) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (10684) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (10694) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (10694) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (10704) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (10704) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (10714) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (10714) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (10724) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10724) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10734) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10744) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10744) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (10754) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10764) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10764) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10774) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10784) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10784) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10794) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (10804) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10804) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10814) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (10824) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10824) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10834) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10844) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (10844) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10854) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (10854) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10864) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10874) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10874) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10884) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10894) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10894) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10904) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10914) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10914) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10924) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10934) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10944) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10944) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10954) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (10954) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (10964) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10974) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10974) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (10984) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (11014) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (11014) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (11014) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (11014) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (11024) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (11034) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (11034) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (11044) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (11044) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (11054) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (11054) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (11064) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (11064) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (11074) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (11084) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (11084) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (11084) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (11094) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (11094) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (11104) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (11104) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (11114) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (11114) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (11124) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (11124) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (11134) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (11134) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (11144) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (11144) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (11154) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (11164) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (11164) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=2 handle=129
I (11174) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (11184) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (11184) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (11194) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (11194) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT
I (11204) SPP_ACCEPTOR_DEMO: ESP_SPP_WRITE_EVT