mirror of
https://github.com/bluekitchen/btstack.git
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217 lines
7.8 KiB
C
217 lines
7.8 KiB
C
/*
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* Copyright (C) 2016 BlueKitchen GmbH
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the copyright holders nor the names of
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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* 4. Any redistribution, use, or modification is done solely for
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* personal benefit and not for any commercial purpose or for
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* monetary gain.
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*
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* THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BLUEKITCHEN
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* GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* Please inquire about commercial licensing options at
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* contact@bluekitchen-gmbh.com
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*
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*/
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#define BTSTACK_FILE__ "btstack_uart_block_embedded.c"
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/*
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* btstack_uart_block_embedded.c
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*
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* Adapter to IRQ-driven hal_uart_dma.h with Embedded BTstack Run Loop
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* Callbacks are executed on main thread via data source and btstack_run_loop_poll_data_sources_from_irq
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*/
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#include "btstack_bool.h"
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#include "btstack_debug.h"
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#include "btstack_uart_block.h"
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#include "btstack_run_loop.h"
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#include "hal_uart_dma.h"
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// NULL
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#include <stddef.h>
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// uart config
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static const btstack_uart_config_t * btstack_uart_block_configuration;
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// data source for integration with BTstack Runloop
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static btstack_data_source_t transport_data_source;
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static bool send_complete;
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static bool receive_complete;
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static bool wakeup_event;
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// callbacks
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static void (*block_sent)(void);
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static void (*block_received)(void);
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static void (*wakeup_handler)(void);
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static void btstack_uart_block_received(void){
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receive_complete = true;
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btstack_run_loop_poll_data_sources_from_irq();
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}
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static void btstack_uart_block_sent(void){
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send_complete = true;
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btstack_run_loop_poll_data_sources_from_irq();
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}
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static void btstack_uart_cts_pulse(void){
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wakeup_event = true;
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btstack_run_loop_poll_data_sources_from_irq();
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}
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static int btstack_uart_embedded_init(const btstack_uart_config_t * config){
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btstack_uart_block_configuration = config;
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hal_uart_dma_set_block_received(&btstack_uart_block_received);
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hal_uart_dma_set_block_sent(&btstack_uart_block_sent);
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return 0;
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}
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static void btstack_uart_embedded_process(btstack_data_source_t *ds, btstack_data_source_callback_type_t callback_type) {
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UNUSED(ds);
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switch (callback_type){
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case DATA_SOURCE_CALLBACK_POLL:
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if (send_complete){
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send_complete = false;
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if (block_sent != NULL){
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block_sent();
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}
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}
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if (receive_complete){
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receive_complete = false;
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if (block_received != NULL){
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block_received();
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}
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}
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if (wakeup_event){
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wakeup_event = false;
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if (wakeup_handler != NULL){
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wakeup_handler();
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}
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}
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break;
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default:
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break;
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}
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}
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static int btstack_uart_embedded_open(void){
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hal_uart_dma_init();
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hal_uart_dma_set_baud(btstack_uart_block_configuration->baudrate);
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// set up polling data_source
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btstack_run_loop_set_data_source_handler(&transport_data_source, &btstack_uart_embedded_process);
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btstack_run_loop_enable_data_source_callbacks(&transport_data_source, DATA_SOURCE_CALLBACK_POLL);
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btstack_run_loop_add_data_source(&transport_data_source);
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return 0;
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}
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static int btstack_uart_embedded_close(void){
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// remove data source
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btstack_run_loop_disable_data_source_callbacks(&transport_data_source, DATA_SOURCE_CALLBACK_POLL);
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btstack_run_loop_remove_data_source(&transport_data_source);
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// close device
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// ...
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return 0;
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}
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static void btstack_uart_embedded_set_block_received( void (*block_handler)(void)){
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block_received = block_handler;
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}
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static void btstack_uart_embedded_set_block_sent( void (*block_handler)(void)){
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block_sent = block_handler;
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}
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static void btstack_uart_embedded_set_wakeup_handler( void (*the_wakeup_handler)(void)){
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wakeup_handler = the_wakeup_handler;
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}
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static int btstack_uart_embedded_set_parity(int parity){
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UNUSED(parity);
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return 0;
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}
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static void btstack_uart_embedded_send_block(const uint8_t *data, uint16_t size){
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hal_uart_dma_send_block(data, size);
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}
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static void btstack_uart_embedded_receive_block(uint8_t *buffer, uint16_t len){
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hal_uart_dma_receive_block(buffer, len);
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}
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static int btstack_uart_embedded_get_supported_sleep_modes(void){
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#ifdef HAVE_HAL_UART_DMA_SLEEP_MODES
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return hal_uart_dma_get_supported_sleep_modes();
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#else
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return BTSTACK_UART_SLEEP_MASK_RTS_HIGH_WAKE_ON_CTS_PULSE;
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#endif
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}
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static void btstack_uart_embedded_set_sleep(btstack_uart_sleep_mode_t sleep_mode){
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log_info("set sleep %u", sleep_mode);
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if (sleep_mode == BTSTACK_UART_SLEEP_RTS_HIGH_WAKE_ON_CTS_PULSE){
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hal_uart_dma_set_csr_irq_handler(&btstack_uart_cts_pulse);
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} else {
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hal_uart_dma_set_csr_irq_handler(NULL);
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}
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#ifdef HAVE_HAL_UART_DMA_SLEEP_MODES
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hal_uart_dma_set_sleep_mode(sleep_mode);
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#else
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hal_uart_dma_set_sleep(sleep_mode != BTSTACK_UART_SLEEP_OFF);
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#endif
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log_info("done");
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}
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static const btstack_uart_block_t btstack_uart_embedded = {
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/* int (*init)(hci_transport_config_uart_t * config); */ &btstack_uart_embedded_init,
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/* int (*open)(void); */ &btstack_uart_embedded_open,
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/* int (*close)(void); */ &btstack_uart_embedded_close,
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/* void (*set_block_received)(void (*handler)(void)); */ &btstack_uart_embedded_set_block_received,
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/* void (*set_block_sent)(void (*handler)(void)); */ &btstack_uart_embedded_set_block_sent,
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/* int (*set_baudrate)(uint32_t baudrate); */ &hal_uart_dma_set_baud,
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/* int (*set_parity)(int parity); */ &btstack_uart_embedded_set_parity,
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#ifdef HAVE_UART_DMA_SET_FLOWCONTROL
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/* int (*set_flowcontrol)(int flowcontrol); */ &hal_uart_dma_set_flowcontrol,
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#else
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/* int (*set_flowcontrol)(int flowcontrol); */ NULL,
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#endif
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/* void (*receive_block)(uint8_t *buffer, uint16_t len); */ &btstack_uart_embedded_receive_block,
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/* void (*send_block)(const uint8_t *buffer, uint16_t length); */ &btstack_uart_embedded_send_block,
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/* int (*get_supported_sleep_modes); */ &btstack_uart_embedded_get_supported_sleep_modes,
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/* void (*set_sleep)(btstack_uart_sleep_mode_t sleep_mode); */ &btstack_uart_embedded_set_sleep,
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/* void (*set_wakeup_handler)(void (*handler)(void)); */ &btstack_uart_embedded_set_wakeup_handler,
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NULL, NULL, NULL, NULL,
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};
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const btstack_uart_block_t * btstack_uart_block_embedded_instance(void){
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return &btstack_uart_embedded;
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}
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