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mbed_src_STM32F7/common/SerialBase.cpp@1:bb146d5fe9aa, 2018-10-23 (annotated)
- Committer:
- MikamiUitOpen
- Date:
- Tue Oct 23 11:51:47 2018 +0000
- Revision:
- 1:bb146d5fe9aa
- Parent:
- 0:f62ffd3644bf
2
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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MikamiUitOpen | 0:f62ffd3644bf | 1 | /* mbed Microcontroller Library |
MikamiUitOpen | 0:f62ffd3644bf | 2 | * Copyright (c) 2006-2013 ARM Limited |
MikamiUitOpen | 0:f62ffd3644bf | 3 | * |
MikamiUitOpen | 0:f62ffd3644bf | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
MikamiUitOpen | 0:f62ffd3644bf | 5 | * you may not use this file except in compliance with the License. |
MikamiUitOpen | 0:f62ffd3644bf | 6 | * You may obtain a copy of the License at |
MikamiUitOpen | 0:f62ffd3644bf | 7 | * |
MikamiUitOpen | 0:f62ffd3644bf | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
MikamiUitOpen | 0:f62ffd3644bf | 9 | * |
MikamiUitOpen | 0:f62ffd3644bf | 10 | * Unless required by applicable law or agreed to in writing, software |
MikamiUitOpen | 0:f62ffd3644bf | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
MikamiUitOpen | 0:f62ffd3644bf | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
MikamiUitOpen | 0:f62ffd3644bf | 13 | * See the License for the specific language governing permissions and |
MikamiUitOpen | 0:f62ffd3644bf | 14 | * limitations under the License. |
MikamiUitOpen | 0:f62ffd3644bf | 15 | */ |
MikamiUitOpen | 0:f62ffd3644bf | 16 | #include "SerialBase.h" |
MikamiUitOpen | 0:f62ffd3644bf | 17 | #include "wait_api.h" |
MikamiUitOpen | 0:f62ffd3644bf | 18 | |
MikamiUitOpen | 0:f62ffd3644bf | 19 | #if DEVICE_SERIAL |
MikamiUitOpen | 0:f62ffd3644bf | 20 | |
MikamiUitOpen | 0:f62ffd3644bf | 21 | namespace mbed { |
MikamiUitOpen | 0:f62ffd3644bf | 22 | |
MikamiUitOpen | 0:f62ffd3644bf | 23 | SerialBase::SerialBase(PinName tx, PinName rx) : |
MikamiUitOpen | 0:f62ffd3644bf | 24 | #if DEVICE_SERIAL_ASYNCH |
MikamiUitOpen | 0:f62ffd3644bf | 25 | _thunk_irq(this), _tx_usage(DMA_USAGE_NEVER), |
MikamiUitOpen | 0:f62ffd3644bf | 26 | _rx_usage(DMA_USAGE_NEVER), |
MikamiUitOpen | 0:f62ffd3644bf | 27 | #endif |
MikamiUitOpen | 0:f62ffd3644bf | 28 | _serial(), _baud(9600) { |
MikamiUitOpen | 0:f62ffd3644bf | 29 | serial_init(&_serial, tx, rx); |
MikamiUitOpen | 0:f62ffd3644bf | 30 | serial_irq_handler(&_serial, SerialBase::_irq_handler, (uint32_t)this); |
MikamiUitOpen | 0:f62ffd3644bf | 31 | } |
MikamiUitOpen | 0:f62ffd3644bf | 32 | |
MikamiUitOpen | 0:f62ffd3644bf | 33 | void SerialBase::baud(int baudrate) { |
MikamiUitOpen | 0:f62ffd3644bf | 34 | serial_baud(&_serial, baudrate); |
MikamiUitOpen | 0:f62ffd3644bf | 35 | _baud = baudrate; |
MikamiUitOpen | 0:f62ffd3644bf | 36 | } |
MikamiUitOpen | 0:f62ffd3644bf | 37 | |
MikamiUitOpen | 0:f62ffd3644bf | 38 | void SerialBase::format(int bits, Parity parity, int stop_bits) { |
MikamiUitOpen | 0:f62ffd3644bf | 39 | serial_format(&_serial, bits, (SerialParity)parity, stop_bits); |
MikamiUitOpen | 0:f62ffd3644bf | 40 | } |
MikamiUitOpen | 0:f62ffd3644bf | 41 | |
MikamiUitOpen | 0:f62ffd3644bf | 42 | int SerialBase::readable() { |
MikamiUitOpen | 0:f62ffd3644bf | 43 | return serial_readable(&_serial); |
MikamiUitOpen | 0:f62ffd3644bf | 44 | } |
MikamiUitOpen | 0:f62ffd3644bf | 45 | |
MikamiUitOpen | 0:f62ffd3644bf | 46 | |
MikamiUitOpen | 0:f62ffd3644bf | 47 | int SerialBase::writeable() { |
MikamiUitOpen | 0:f62ffd3644bf | 48 | return serial_writable(&_serial); |
MikamiUitOpen | 0:f62ffd3644bf | 49 | } |
MikamiUitOpen | 0:f62ffd3644bf | 50 | |
MikamiUitOpen | 0:f62ffd3644bf | 51 | void SerialBase::attach(void (*fptr)(void), IrqType type) { |
MikamiUitOpen | 0:f62ffd3644bf | 52 | if (fptr) { |
MikamiUitOpen | 0:f62ffd3644bf | 53 | _irq[type].attach(fptr); |
MikamiUitOpen | 0:f62ffd3644bf | 54 | serial_irq_set(&_serial, (SerialIrq)type, 1); |
MikamiUitOpen | 0:f62ffd3644bf | 55 | } else { |
MikamiUitOpen | 0:f62ffd3644bf | 56 | serial_irq_set(&_serial, (SerialIrq)type, 0); |
MikamiUitOpen | 0:f62ffd3644bf | 57 | } |
MikamiUitOpen | 0:f62ffd3644bf | 58 | } |
MikamiUitOpen | 0:f62ffd3644bf | 59 | |
MikamiUitOpen | 0:f62ffd3644bf | 60 | void SerialBase::_irq_handler(uint32_t id, SerialIrq irq_type) { |
MikamiUitOpen | 0:f62ffd3644bf | 61 | SerialBase *handler = (SerialBase*)id; |
MikamiUitOpen | 0:f62ffd3644bf | 62 | handler->_irq[irq_type].call(); |
MikamiUitOpen | 0:f62ffd3644bf | 63 | } |
MikamiUitOpen | 0:f62ffd3644bf | 64 | |
MikamiUitOpen | 0:f62ffd3644bf | 65 | int SerialBase::_base_getc() { |
MikamiUitOpen | 0:f62ffd3644bf | 66 | return serial_getc(&_serial); |
MikamiUitOpen | 0:f62ffd3644bf | 67 | } |
MikamiUitOpen | 0:f62ffd3644bf | 68 | |
MikamiUitOpen | 0:f62ffd3644bf | 69 | int SerialBase::_base_putc(int c) { |
MikamiUitOpen | 0:f62ffd3644bf | 70 | serial_putc(&_serial, c); |
MikamiUitOpen | 0:f62ffd3644bf | 71 | return c; |
MikamiUitOpen | 0:f62ffd3644bf | 72 | } |
MikamiUitOpen | 0:f62ffd3644bf | 73 | |
MikamiUitOpen | 0:f62ffd3644bf | 74 | void SerialBase::send_break() { |
MikamiUitOpen | 0:f62ffd3644bf | 75 | // Wait for 1.5 frames before clearing the break condition |
MikamiUitOpen | 0:f62ffd3644bf | 76 | // This will have different effects on our platforms, but should |
MikamiUitOpen | 0:f62ffd3644bf | 77 | // ensure that we keep the break active for at least one frame. |
MikamiUitOpen | 0:f62ffd3644bf | 78 | // We consider a full frame (1 start bit + 8 data bits bits + |
MikamiUitOpen | 0:f62ffd3644bf | 79 | // 1 parity bit + 2 stop bits = 12 bits) for computation. |
MikamiUitOpen | 0:f62ffd3644bf | 80 | // One bit time (in us) = 1000000/_baud |
MikamiUitOpen | 0:f62ffd3644bf | 81 | // Twelve bits: 12000000/baud delay |
MikamiUitOpen | 0:f62ffd3644bf | 82 | // 1.5 frames: 18000000/baud delay |
MikamiUitOpen | 0:f62ffd3644bf | 83 | serial_break_set(&_serial); |
MikamiUitOpen | 0:f62ffd3644bf | 84 | wait_us(18000000/_baud); |
MikamiUitOpen | 0:f62ffd3644bf | 85 | serial_break_clear(&_serial); |
MikamiUitOpen | 0:f62ffd3644bf | 86 | } |
MikamiUitOpen | 0:f62ffd3644bf | 87 | |
MikamiUitOpen | 0:f62ffd3644bf | 88 | #if DEVICE_SERIAL_FC |
MikamiUitOpen | 0:f62ffd3644bf | 89 | void SerialBase::set_flow_control(Flow type, PinName flow1, PinName flow2) { |
MikamiUitOpen | 0:f62ffd3644bf | 90 | FlowControl flow_type = (FlowControl)type; |
MikamiUitOpen | 0:f62ffd3644bf | 91 | switch(type) { |
MikamiUitOpen | 0:f62ffd3644bf | 92 | case RTS: |
MikamiUitOpen | 0:f62ffd3644bf | 93 | serial_set_flow_control(&_serial, flow_type, flow1, NC); |
MikamiUitOpen | 0:f62ffd3644bf | 94 | break; |
MikamiUitOpen | 0:f62ffd3644bf | 95 | |
MikamiUitOpen | 0:f62ffd3644bf | 96 | case CTS: |
MikamiUitOpen | 0:f62ffd3644bf | 97 | serial_set_flow_control(&_serial, flow_type, NC, flow1); |
MikamiUitOpen | 0:f62ffd3644bf | 98 | break; |
MikamiUitOpen | 0:f62ffd3644bf | 99 | |
MikamiUitOpen | 0:f62ffd3644bf | 100 | case RTSCTS: |
MikamiUitOpen | 0:f62ffd3644bf | 101 | case Disabled: |
MikamiUitOpen | 0:f62ffd3644bf | 102 | serial_set_flow_control(&_serial, flow_type, flow1, flow2); |
MikamiUitOpen | 0:f62ffd3644bf | 103 | break; |
MikamiUitOpen | 0:f62ffd3644bf | 104 | |
MikamiUitOpen | 0:f62ffd3644bf | 105 | default: |
MikamiUitOpen | 0:f62ffd3644bf | 106 | break; |
MikamiUitOpen | 0:f62ffd3644bf | 107 | } |
MikamiUitOpen | 0:f62ffd3644bf | 108 | } |
MikamiUitOpen | 0:f62ffd3644bf | 109 | #endif |
MikamiUitOpen | 0:f62ffd3644bf | 110 | |
MikamiUitOpen | 0:f62ffd3644bf | 111 | #if DEVICE_SERIAL_ASYNCH |
MikamiUitOpen | 0:f62ffd3644bf | 112 | |
MikamiUitOpen | 0:f62ffd3644bf | 113 | int SerialBase::write(const uint8_t *buffer, int length, const event_callback_t& callback, int event) |
MikamiUitOpen | 0:f62ffd3644bf | 114 | { |
MikamiUitOpen | 0:f62ffd3644bf | 115 | if (serial_tx_active(&_serial)) { |
MikamiUitOpen | 0:f62ffd3644bf | 116 | return -1; // transaction ongoing |
MikamiUitOpen | 0:f62ffd3644bf | 117 | } |
MikamiUitOpen | 0:f62ffd3644bf | 118 | start_write((void *)buffer, length, 8, callback, event); |
MikamiUitOpen | 0:f62ffd3644bf | 119 | return 0; |
MikamiUitOpen | 0:f62ffd3644bf | 120 | } |
MikamiUitOpen | 0:f62ffd3644bf | 121 | |
MikamiUitOpen | 0:f62ffd3644bf | 122 | int SerialBase::write(const uint16_t *buffer, int length, const event_callback_t& callback, int event) |
MikamiUitOpen | 0:f62ffd3644bf | 123 | { |
MikamiUitOpen | 0:f62ffd3644bf | 124 | if (serial_tx_active(&_serial)) { |
MikamiUitOpen | 0:f62ffd3644bf | 125 | return -1; // transaction ongoing |
MikamiUitOpen | 0:f62ffd3644bf | 126 | } |
MikamiUitOpen | 0:f62ffd3644bf | 127 | start_write((void *)buffer, length, 16, callback, event); |
MikamiUitOpen | 0:f62ffd3644bf | 128 | return 0; |
MikamiUitOpen | 0:f62ffd3644bf | 129 | } |
MikamiUitOpen | 0:f62ffd3644bf | 130 | |
MikamiUitOpen | 0:f62ffd3644bf | 131 | void SerialBase::start_write(const void *buffer, int buffer_size, char buffer_width, const event_callback_t& callback, int event) |
MikamiUitOpen | 0:f62ffd3644bf | 132 | { |
MikamiUitOpen | 0:f62ffd3644bf | 133 | _tx_callback = callback; |
MikamiUitOpen | 0:f62ffd3644bf | 134 | |
MikamiUitOpen | 0:f62ffd3644bf | 135 | _thunk_irq.callback(&SerialBase::interrupt_handler_asynch); |
MikamiUitOpen | 0:f62ffd3644bf | 136 | serial_tx_asynch(&_serial, buffer, buffer_size, buffer_width, _thunk_irq.entry(), event, _tx_usage); |
MikamiUitOpen | 0:f62ffd3644bf | 137 | } |
MikamiUitOpen | 0:f62ffd3644bf | 138 | |
MikamiUitOpen | 0:f62ffd3644bf | 139 | void SerialBase::abort_write(void) |
MikamiUitOpen | 0:f62ffd3644bf | 140 | { |
MikamiUitOpen | 0:f62ffd3644bf | 141 | serial_tx_abort_asynch(&_serial); |
MikamiUitOpen | 0:f62ffd3644bf | 142 | } |
MikamiUitOpen | 0:f62ffd3644bf | 143 | |
MikamiUitOpen | 0:f62ffd3644bf | 144 | void SerialBase::abort_read(void) |
MikamiUitOpen | 0:f62ffd3644bf | 145 | { |
MikamiUitOpen | 0:f62ffd3644bf | 146 | serial_rx_abort_asynch(&_serial); |
MikamiUitOpen | 0:f62ffd3644bf | 147 | } |
MikamiUitOpen | 0:f62ffd3644bf | 148 | |
MikamiUitOpen | 0:f62ffd3644bf | 149 | int SerialBase::set_dma_usage_tx(DMAUsage usage) |
MikamiUitOpen | 0:f62ffd3644bf | 150 | { |
MikamiUitOpen | 0:f62ffd3644bf | 151 | if (serial_tx_active(&_serial)) { |
MikamiUitOpen | 0:f62ffd3644bf | 152 | return -1; |
MikamiUitOpen | 0:f62ffd3644bf | 153 | } |
MikamiUitOpen | 0:f62ffd3644bf | 154 | _tx_usage = usage; |
MikamiUitOpen | 0:f62ffd3644bf | 155 | return 0; |
MikamiUitOpen | 0:f62ffd3644bf | 156 | } |
MikamiUitOpen | 0:f62ffd3644bf | 157 | |
MikamiUitOpen | 0:f62ffd3644bf | 158 | int SerialBase::set_dma_usage_rx(DMAUsage usage) |
MikamiUitOpen | 0:f62ffd3644bf | 159 | { |
MikamiUitOpen | 0:f62ffd3644bf | 160 | if (serial_tx_active(&_serial)) { |
MikamiUitOpen | 0:f62ffd3644bf | 161 | return -1; |
MikamiUitOpen | 0:f62ffd3644bf | 162 | } |
MikamiUitOpen | 0:f62ffd3644bf | 163 | _rx_usage = usage; |
MikamiUitOpen | 0:f62ffd3644bf | 164 | return 0; |
MikamiUitOpen | 0:f62ffd3644bf | 165 | } |
MikamiUitOpen | 0:f62ffd3644bf | 166 | |
MikamiUitOpen | 0:f62ffd3644bf | 167 | int SerialBase::read(uint8_t *buffer, int length, const event_callback_t& callback, int event, unsigned char char_match) |
MikamiUitOpen | 0:f62ffd3644bf | 168 | { |
MikamiUitOpen | 0:f62ffd3644bf | 169 | if (serial_rx_active(&_serial)) { |
MikamiUitOpen | 0:f62ffd3644bf | 170 | return -1; // transaction ongoing |
MikamiUitOpen | 0:f62ffd3644bf | 171 | } |
MikamiUitOpen | 0:f62ffd3644bf | 172 | start_read((void*)buffer, length, 8, callback, event, char_match); |
MikamiUitOpen | 0:f62ffd3644bf | 173 | return 0; |
MikamiUitOpen | 0:f62ffd3644bf | 174 | } |
MikamiUitOpen | 0:f62ffd3644bf | 175 | |
MikamiUitOpen | 0:f62ffd3644bf | 176 | |
MikamiUitOpen | 0:f62ffd3644bf | 177 | int SerialBase::read(uint16_t *buffer, int length, const event_callback_t& callback, int event, unsigned char char_match) |
MikamiUitOpen | 0:f62ffd3644bf | 178 | { |
MikamiUitOpen | 0:f62ffd3644bf | 179 | if (serial_rx_active(&_serial)) { |
MikamiUitOpen | 0:f62ffd3644bf | 180 | return -1; // transaction ongoing |
MikamiUitOpen | 0:f62ffd3644bf | 181 | } |
MikamiUitOpen | 0:f62ffd3644bf | 182 | start_read((void*)buffer, length, 16, callback, event, char_match); |
MikamiUitOpen | 0:f62ffd3644bf | 183 | return 0; |
MikamiUitOpen | 0:f62ffd3644bf | 184 | } |
MikamiUitOpen | 0:f62ffd3644bf | 185 | |
MikamiUitOpen | 0:f62ffd3644bf | 186 | |
MikamiUitOpen | 0:f62ffd3644bf | 187 | void SerialBase::start_read(void *buffer, int buffer_size, char buffer_width, const event_callback_t& callback, int event, unsigned char char_match) |
MikamiUitOpen | 0:f62ffd3644bf | 188 | { |
MikamiUitOpen | 0:f62ffd3644bf | 189 | _rx_callback = callback; |
MikamiUitOpen | 0:f62ffd3644bf | 190 | _thunk_irq.callback(&SerialBase::interrupt_handler_asynch); |
MikamiUitOpen | 0:f62ffd3644bf | 191 | serial_rx_asynch(&_serial, buffer, buffer_size, buffer_width, _thunk_irq.entry(), event, char_match, _rx_usage); |
MikamiUitOpen | 0:f62ffd3644bf | 192 | } |
MikamiUitOpen | 0:f62ffd3644bf | 193 | |
MikamiUitOpen | 0:f62ffd3644bf | 194 | void SerialBase::interrupt_handler_asynch(void) |
MikamiUitOpen | 0:f62ffd3644bf | 195 | { |
MikamiUitOpen | 0:f62ffd3644bf | 196 | int event = serial_irq_handler_asynch(&_serial); |
MikamiUitOpen | 0:f62ffd3644bf | 197 | int rx_event = event & SERIAL_EVENT_RX_MASK; |
MikamiUitOpen | 0:f62ffd3644bf | 198 | if (_rx_callback && rx_event) { |
MikamiUitOpen | 0:f62ffd3644bf | 199 | _rx_callback.call(rx_event); |
MikamiUitOpen | 0:f62ffd3644bf | 200 | } |
MikamiUitOpen | 0:f62ffd3644bf | 201 | |
MikamiUitOpen | 0:f62ffd3644bf | 202 | int tx_event = event & SERIAL_EVENT_TX_MASK; |
MikamiUitOpen | 0:f62ffd3644bf | 203 | if (_tx_callback && tx_event) { |
MikamiUitOpen | 0:f62ffd3644bf | 204 | _tx_callback.call(tx_event); |
MikamiUitOpen | 0:f62ffd3644bf | 205 | } |
MikamiUitOpen | 0:f62ffd3644bf | 206 | } |
MikamiUitOpen | 0:f62ffd3644bf | 207 | |
MikamiUitOpen | 0:f62ffd3644bf | 208 | #endif |
MikamiUitOpen | 0:f62ffd3644bf | 209 | |
MikamiUitOpen | 0:f62ffd3644bf | 210 | } // namespace mbed |
MikamiUitOpen | 0:f62ffd3644bf | 211 | |
MikamiUitOpen | 0:f62ffd3644bf | 212 | #endif |