mirror of https://github.com/ARMmbed/mbed-os.git
132 lines
4.0 KiB
C++
132 lines
4.0 KiB
C++
/* mbed Microcontroller Library
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* Copyright (c) 2017-2017 ARM Limited
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef CY_H4TRANSPORT_DRIVER_H_
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#define CY_H4TRANSPORT_DRIVER_H_
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#if (DEVICE_SERIAL && DEVICE_SERIAL_FC) || defined(DOXYGEN_ONLY)
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#include <stdint.h>
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#include "ble/driver/CordioHCITransportDriver.h"
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#include "drivers/DigitalInOut.h"
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#include "drivers/InterruptIn.h"
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#include "cyhal_uart.h"
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namespace ble {
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namespace vendor {
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namespace cypress_ble {
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using namespace ble::vendor;
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/**
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* Implementation of the H4 driver over Cypress based chips.
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*/
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class CyH4TransportDriver : public CordioHCITransportDriver {
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public:
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/**
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* Initialize the transport driver.
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*
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*/
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CyH4TransportDriver(PinName tx, PinName rx, PinName cts, PinName rts, PinName bt_power_name, int baud, PinName bt_host_wake_name, PinName bt_device_wake_name,
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uint8_t host_wake_irq = 0, uint8_t dev_wake_irq = 0);
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CyH4TransportDriver(PinName tx, PinName rx, PinName cts, PinName rts, PinName bt_power_name, int baud);
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/**
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* Destructor
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*/
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virtual ~CyH4TransportDriver();
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/**
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* @see CordioHCITransportDriver::initialize
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*/
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virtual void initialize();
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/**
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* @see CordioHCITransportDriver::terminate
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*/
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virtual void terminate();
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/**
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* @see CordioHCITransportDriver::write
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*/
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virtual uint16_t write(uint8_t type, uint16_t len, uint8_t *pData);
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void bt_host_wake_rise_irq_handler();
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void bt_host_wake_fall_irq_handler();
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#if (defined(MBED_TICKLESS) && DEVICE_SLEEP && DEVICE_LPTICKER)
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void on_host_stack_inactivity();
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#endif
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void update_uart_baud_rate(int baud);
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bool get_enabled_powersave();
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uint8_t get_host_wake_irq_event();
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uint8_t get_dev_wake_irq_event();
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private:
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void assert_bt_dev_wake();
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void deassert_bt_dev_wake();
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// Use HAL serial because Cypress UART is buffered.
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// The PUTC function does not actually blocks until data is fully transmitted,
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// it only blocks until data gets into HW buffer.
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// The UART APIs prevents sleep while there are data in the HW buffer.
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// However UART APIs does not prevent the BT radio from going to sleep.
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// Use the HAL APIs to prevent the radio from going to sleep until UART transmition is complete.
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// Mbed layer has no API that distinguish between data in HW buffer v.s. data already transmitted.
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cyhal_uart_t uart;
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PinName cts;
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PinName rts;
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PinName tx;
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PinName rx;
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PinName bt_host_wake_name;
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PinName bt_device_wake_name;
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mbed::DigitalInOut bt_power;
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mbed::DigitalInOut bt_host_wake;
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mbed::DigitalInOut bt_device_wake;
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bool bt_host_wake_active;
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#if (defined(MBED_TICKLESS) && DEVICE_SLEEP && DEVICE_LPTICKER)
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mbed::InterruptIn *host_wake_pin;
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#endif
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bool enabled_powersave;
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uint8_t host_wake_irq_event;
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uint8_t dev_wake_irq_event;
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bool holding_deep_sleep_lock;
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};
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} // namespace cypress
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} // namespace vendor
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} // namespace ble
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#define DEF_BT_BAUD_RATE (115200)
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#define DEF_BT_3M_BAUD_RATE (3000000) /* Both Host and BT device have to be adapt to this */
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#define WAKE_EVENT_ACTIVE_HIGH ( 1 ) /* Interrupt Rising Edge */
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#define WAKE_EVENT_ACTIVE_LOW ( 0 ) /* Interrupt Falling Edge */
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ble::vendor::cypress_ble::CyH4TransportDriver& ble_cordio_get_default_h4_transport_driver();
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ble::vendor::cypress_ble::CyH4TransportDriver& ble_cordio_get_h4_transport_driver();
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#endif
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#endif /* CY_H4TRANSPORT_DRIVER_H_ */
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