zhang boie / mbed-dev-f30333

mbed-dev-f303

drivers/SerialBase.cpp@0:bdf663c61a82, 2022-06-14 (annotated)

Committer:
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4
Date:
Tue Jun 14 09:21:18 2022 +0000
Revision:
0:bdf663c61a82
lib

Who changed what in which revision?

UserRevisionLine numberNew contents of line
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 1 /* mbed Microcontroller Library
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 2 * Copyright (c) 2006-2013 ARM Limited
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 3 *
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 4 * Licensed under the Apache License, Version 2.0 (the "License");
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 5 * you may not use this file except in compliance with the License.
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 6 * You may obtain a copy of the License at
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 7 *
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 8 * http://www.apache.org/licenses/LICENSE-2.0
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 9 *
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 10 * Unless required by applicable law or agreed to in writing, software
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 11 * distributed under the License is distributed on an "AS IS" BASIS,
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 13 * See the License for the specific language governing permissions and
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 14 * limitations under the License.
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 15 */
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 16 #include "drivers/SerialBase.h"
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 17 #include "platform/mbed_wait_api.h"
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 18 #include "platform/mbed_critical.h"
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 19 #include "platform/mbed_sleep.h"
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 20
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 21 #if DEVICE_SERIAL
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 22
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 23 namespace mbed {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 24
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 25 SerialBase::SerialBase(PinName tx, PinName rx, int baud) :
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 26 #if DEVICE_SERIAL_ASYNCH
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 27 _thunk_irq(this), _tx_usage(DMA_USAGE_NEVER),
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 28 _rx_usage(DMA_USAGE_NEVER), _tx_callback(NULL),
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 29 _rx_callback(NULL),
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 30 #endif
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 31 _serial(), _baud(baud) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 32 // No lock needed in the constructor
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 33
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 34 for (size_t i = 0; i < sizeof _irq / sizeof _irq[0]; i++) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 35 _irq[i] = NULL;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 36 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 37
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 38 serial_init(&_serial, tx, rx);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 39 serial_baud(&_serial, _baud);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 40 serial_irq_handler(&_serial, SerialBase::_irq_handler, (uint32_t)this);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 41 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 42
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 43 void SerialBase::baud(int baudrate) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 44 lock();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 45 serial_baud(&_serial, baudrate);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 46 _baud = baudrate;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 47 unlock();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 48 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 49
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 50 void SerialBase::format(int bits, Parity parity, int stop_bits) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 51 lock();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 52 serial_format(&_serial, bits, (SerialParity)parity, stop_bits);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 53 unlock();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 54 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 55
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 56 int SerialBase::readable() {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 57 lock();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 58 int ret = serial_readable(&_serial);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 59 unlock();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 60 return ret;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 61 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 62
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 63
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 64 int SerialBase::writeable() {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 65 lock();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 66 int ret = serial_writable(&_serial);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 67 unlock();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 68 return ret;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 69 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 70
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 71 void SerialBase::attach(Callback<void()> func, IrqType type) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 72 lock();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 73 // Disable interrupts when attaching interrupt handler
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 74 core_util_critical_section_enter();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 75 if (func) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 76 // lock deep sleep only the first time
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 77 if (!_irq[type]) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 78 sleep_manager_lock_deep_sleep();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 79 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 80 _irq[type] = func;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 81 serial_irq_set(&_serial, (SerialIrq)type, 1);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 82 } else {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 83 // unlock deep sleep only the first time
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 84 if (_irq[type]) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 85 sleep_manager_unlock_deep_sleep();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 86 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 87 _irq[type] = NULL;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 88 serial_irq_set(&_serial, (SerialIrq)type, 0);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 89 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 90 core_util_critical_section_exit();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 91 unlock();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 92 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 93
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 94 void SerialBase::_irq_handler(uint32_t id, SerialIrq irq_type) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 95 SerialBase *handler = (SerialBase*)id;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 96 if (handler->_irq[irq_type]) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 97 handler->_irq[irq_type]();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 98 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 99 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 100
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 101 int SerialBase::_base_getc() {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 102 // Mutex is already held
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 103 return serial_getc(&_serial);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 104 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 105
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 106 int SerialBase::_base_putc(int c) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 107 // Mutex is already held
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 108 serial_putc(&_serial, c);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 109 return c;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 110 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 111
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 112 void SerialBase::send_break() {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 113 lock();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 114 // Wait for 1.5 frames before clearing the break condition
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 115 // This will have different effects on our platforms, but should
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 116 // ensure that we keep the break active for at least one frame.
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 117 // We consider a full frame (1 start bit + 8 data bits bits +
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 118 // 1 parity bit + 2 stop bits = 12 bits) for computation.
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 119 // One bit time (in us) = 1000000/_baud
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 120 // Twelve bits: 12000000/baud delay
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 121 // 1.5 frames: 18000000/baud delay
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 122 serial_break_set(&_serial);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 123 wait_us(18000000/_baud);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 124 serial_break_clear(&_serial);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 125 unlock();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 126 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 127
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 128 void SerialBase::lock() {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 129 // Stub
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 130 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 131
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 132 void SerialBase:: unlock() {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 133 // Stub
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 134 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 135
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 136 SerialBase::~SerialBase()
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 137 {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 138 // No lock needed in destructor
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 139
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 140 // Detaching interrupts releases the sleep lock if it was locked
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 141 for (int irq = 0; irq < IrqCnt; irq++) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 142 attach(NULL, (IrqType)irq);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 143 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 144 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 145
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 146 #if DEVICE_SERIAL_FC
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 147 void SerialBase::set_flow_control(Flow type, PinName flow1, PinName flow2) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 148 lock();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 149 FlowControl flow_type = (FlowControl)type;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 150 switch(type) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 151 case RTS:
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 152 serial_set_flow_control(&_serial, flow_type, flow1, NC);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 153 break;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 154
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 155 case CTS:
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 156 serial_set_flow_control(&_serial, flow_type, NC, flow1);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 157 break;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 158
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 159 case RTSCTS:
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 160 case Disabled:
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 161 serial_set_flow_control(&_serial, flow_type, flow1, flow2);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 162 break;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 163
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 164 default:
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 165 break;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 166 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 167 unlock();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 168 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 169 #endif
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 170
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 171 #if DEVICE_SERIAL_ASYNCH
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 172
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 173 int SerialBase::write(const uint8_t *buffer, int length, const event_callback_t& callback, int event)
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 174 {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 175 if (serial_tx_active(&_serial)) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 176 return -1; // transaction ongoing
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 177 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 178 start_write((void *)buffer, length, 8, callback, event);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 179 return 0;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 180 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 181
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 182 int SerialBase::write(const uint16_t *buffer, int length, const event_callback_t& callback, int event)
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 183 {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 184 if (serial_tx_active(&_serial)) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 185 return -1; // transaction ongoing
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 186 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 187 start_write((void *)buffer, length, 16, callback, event);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 188 return 0;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 189 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 190
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 191 void SerialBase::start_write(const void *buffer, int buffer_size, char buffer_width, const event_callback_t& callback, int event)
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 192 {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 193 _tx_callback = callback;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 194
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 195 _thunk_irq.callback(&SerialBase::interrupt_handler_asynch);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 196 sleep_manager_lock_deep_sleep();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 197 serial_tx_asynch(&_serial, buffer, buffer_size, buffer_width, _thunk_irq.entry(), event, _tx_usage);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 198 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 199
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 200 void SerialBase::abort_write(void)
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 201 {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 202 // rx might still be active
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 203 if (_rx_callback) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 204 sleep_manager_unlock_deep_sleep();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 205 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 206 _tx_callback = NULL;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 207 serial_tx_abort_asynch(&_serial);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 208 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 209
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 210 void SerialBase::abort_read(void)
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 211 {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 212 // tx might still be active
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 213 if (_tx_callback) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 214 sleep_manager_unlock_deep_sleep();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 215 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 216 _rx_callback = NULL;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 217 serial_rx_abort_asynch(&_serial);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 218 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 219
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 220 int SerialBase::set_dma_usage_tx(DMAUsage usage)
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 221 {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 222 if (serial_tx_active(&_serial)) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 223 return -1;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 224 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 225 _tx_usage = usage;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 226 return 0;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 227 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 228
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 229 int SerialBase::set_dma_usage_rx(DMAUsage usage)
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 230 {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 231 if (serial_tx_active(&_serial)) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 232 return -1;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 233 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 234 _rx_usage = usage;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 235 return 0;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 236 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 237
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 238 int SerialBase::read(uint8_t *buffer, int length, const event_callback_t& callback, int event, unsigned char char_match)
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 239 {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 240 if (serial_rx_active(&_serial)) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 241 return -1; // transaction ongoing
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 242 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 243 start_read((void*)buffer, length, 8, callback, event, char_match);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 244 return 0;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 245 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 246
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 247
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 248 int SerialBase::read(uint16_t *buffer, int length, const event_callback_t& callback, int event, unsigned char char_match)
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 249 {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 250 if (serial_rx_active(&_serial)) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 251 return -1; // transaction ongoing
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 252 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 253 start_read((void*)buffer, length, 16, callback, event, char_match);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 254 return 0;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 255 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 256
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 257
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 258 void SerialBase::start_read(void *buffer, int buffer_size, char buffer_width, const event_callback_t& callback, int event, unsigned char char_match)
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 259 {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 260 _rx_callback = callback;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 261 _thunk_irq.callback(&SerialBase::interrupt_handler_asynch);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 262 sleep_manager_lock_deep_sleep();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 263 serial_rx_asynch(&_serial, buffer, buffer_size, buffer_width, _thunk_irq.entry(), event, char_match, _rx_usage);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 264 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 265
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 266 void SerialBase::interrupt_handler_asynch(void)
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 267 {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 268 int event = serial_irq_handler_asynch(&_serial);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 269 int rx_event = event & SERIAL_EVENT_RX_MASK;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 270 bool unlock_deepsleep = false;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 271
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 272 if (_rx_callback && rx_event) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 273 unlock_deepsleep = true;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 274 _rx_callback.call(rx_event);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 275 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 276
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 277 int tx_event = event & SERIAL_EVENT_TX_MASK;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 278 if (_tx_callback && tx_event) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 279 unlock_deepsleep = true;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 280 _tx_callback.call(tx_event);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 281 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 282 // unlock if tx or rx events are generated
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 283 if (unlock_deepsleep) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 284 sleep_manager_unlock_deep_sleep();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 285 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 286 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 287
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 288 #endif
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 289
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 290 } // namespace mbed
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 291
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 292 #endif
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 293