我正在使用 CYW20820spp Bluetooth®发送数据。 目前每20ms发送512字节的数据。我使用函数wiced_bt_spp_send_session_data(spp_handle, p_data, len);并且在调用发送函数之前调用iced_bt_spp_can_send_more_data(spp_handle)以确保可以发送下一个数据包。主机是
手机SPP Bluetooth®调试助手。 我发现 SPP 缓冲区偶尔会满。我通过wiced_bt_spp_port_purge(spp_handle, PORT_PURGE_TXCLEAR)释放了缓冲区，但是没有办法解决这个问题。如何解决这个问题？CYW20820不支持这么快的传输吗？
uint8_t app_send_data(uint8_t *p_data, uint32_t len){ int i; wiced_bool_t ret; sta
tic int spp_send_fail_count = 0; static int spp_send_success_count = 0; static int count=0,disconnect_count=0; wiced_result_t result; if(count>20) { count=0; error[0]= (spp_send_fail_count * 100) / (spp_send_success_count + spp_send_fail_count); if(spp_send_fail_count>20) { fail_to_reset++; if(fail_to_reset>=5) { fail_to_reset=0;flag_spp_error=1; wiced_bt_spp_port_purge(spp_handle,PORT_PURGE_TXCLEAR); } } else { flag_spp_error=0; fail_to_reset=0; } spp_send_fail_count=0;spp_send_success_count=0; } flag_spp_autoconnect=1; if (spp_handle == 0) { return 0; } ret = wiced_bt_spp_can_send_more_data(spp_handle); if (!ret) { spp_send_fail_count++; count++; wiced_rtos_delay_milliseconds(2, ALLOW_THREAD_TO_SLEEP); return 0; } ret = wiced_bt_spp_send_session_data(spp_handle, p_data, len); if (!ret) { spp_send_fail_count++; count++; return 0; } spp_send_success_count++; count++; return 1;}
