Yihui Xiong / mbed-src-nrf51822

customized mbed library sources for nrf51822

Dependents:   Grove_Node Potentiometer BLE_Beacon I2C_Scanner

common/SerialBase.cpp@0:700cadd8b708, 2014-11-04 (annotated)

Committer:
yihui
Date:
Tue Nov 04 07:38:53 2014 +0000
Revision:
0:700cadd8b708
customized mbed-src library for nrf51822

Who changed what in which revision?

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yihui 0:700cadd8b708 1 /* mbed Microcontroller Library
yihui 0:700cadd8b708 2 * Copyright (c) 2006-2013 ARM Limited
yihui 0:700cadd8b708 3 *
yihui 0:700cadd8b708 4 * Licensed under the Apache License, Version 2.0 (the "License");
yihui 0:700cadd8b708 5 * you may not use this file except in compliance with the License.
yihui 0:700cadd8b708 6 * You may obtain a copy of the License at
yihui 0:700cadd8b708 7 *
yihui 0:700cadd8b708 8 * http://www.apache.org/licenses/LICENSE-2.0
yihui 0:700cadd8b708 9 *
yihui 0:700cadd8b708 10 * Unless required by applicable law or agreed to in writing, software
yihui 0:700cadd8b708 11 * distributed under the License is distributed on an "AS IS" BASIS,
yihui 0:700cadd8b708 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
yihui 0:700cadd8b708 13 * See the License for the specific language governing permissions and
yihui 0:700cadd8b708 14 * limitations under the License.
yihui 0:700cadd8b708 15 */
yihui 0:700cadd8b708 16 #include "SerialBase.h"
yihui 0:700cadd8b708 17 #include "wait_api.h"
yihui 0:700cadd8b708 18
yihui 0:700cadd8b708 19 #if DEVICE_SERIAL
yihui 0:700cadd8b708 20
yihui 0:700cadd8b708 21 namespace mbed {
yihui 0:700cadd8b708 22
yihui 0:700cadd8b708 23 SerialBase::SerialBase(PinName tx, PinName rx) : _serial(), _baud(9600) {
yihui 0:700cadd8b708 24 serial_init(&_serial, tx, rx);
yihui 0:700cadd8b708 25 serial_irq_handler(&_serial, SerialBase::_irq_handler, (uint32_t)this);
yihui 0:700cadd8b708 26 }
yihui 0:700cadd8b708 27
yihui 0:700cadd8b708 28 void SerialBase::baud(int baudrate) {
yihui 0:700cadd8b708 29 serial_baud(&_serial, baudrate);
yihui 0:700cadd8b708 30 _baud = baudrate;
yihui 0:700cadd8b708 31 }
yihui 0:700cadd8b708 32
yihui 0:700cadd8b708 33 void SerialBase::format(int bits, Parity parity, int stop_bits) {
yihui 0:700cadd8b708 34 serial_format(&_serial, bits, (SerialParity)parity, stop_bits);
yihui 0:700cadd8b708 35 }
yihui 0:700cadd8b708 36
yihui 0:700cadd8b708 37 int SerialBase::readable() {
yihui 0:700cadd8b708 38 return serial_readable(&_serial);
yihui 0:700cadd8b708 39 }
yihui 0:700cadd8b708 40
yihui 0:700cadd8b708 41
yihui 0:700cadd8b708 42 int SerialBase::writeable() {
yihui 0:700cadd8b708 43 return serial_writable(&_serial);
yihui 0:700cadd8b708 44 }
yihui 0:700cadd8b708 45
yihui 0:700cadd8b708 46 void SerialBase::attach(void (*fptr)(void), IrqType type) {
yihui 0:700cadd8b708 47 if (fptr) {
yihui 0:700cadd8b708 48 _irq[type].attach(fptr);
yihui 0:700cadd8b708 49 serial_irq_set(&_serial, (SerialIrq)type, 1);
yihui 0:700cadd8b708 50 } else {
yihui 0:700cadd8b708 51 serial_irq_set(&_serial, (SerialIrq)type, 0);
yihui 0:700cadd8b708 52 }
yihui 0:700cadd8b708 53 }
yihui 0:700cadd8b708 54
yihui 0:700cadd8b708 55 void SerialBase::_irq_handler(uint32_t id, SerialIrq irq_type) {
yihui 0:700cadd8b708 56 SerialBase *handler = (SerialBase*)id;
yihui 0:700cadd8b708 57 handler->_irq[irq_type].call();
yihui 0:700cadd8b708 58 }
yihui 0:700cadd8b708 59
yihui 0:700cadd8b708 60 int SerialBase::_base_getc() {
yihui 0:700cadd8b708 61 return serial_getc(&_serial);
yihui 0:700cadd8b708 62 }
yihui 0:700cadd8b708 63
yihui 0:700cadd8b708 64 int SerialBase::_base_putc(int c) {
yihui 0:700cadd8b708 65 serial_putc(&_serial, c);
yihui 0:700cadd8b708 66 return c;
yihui 0:700cadd8b708 67 }
yihui 0:700cadd8b708 68
yihui 0:700cadd8b708 69 void SerialBase::send_break() {
yihui 0:700cadd8b708 70 // Wait for 1.5 frames before clearing the break condition
yihui 0:700cadd8b708 71 // This will have different effects on our platforms, but should
yihui 0:700cadd8b708 72 // ensure that we keep the break active for at least one frame.
yihui 0:700cadd8b708 73 // We consider a full frame (1 start bit + 8 data bits bits +
yihui 0:700cadd8b708 74 // 1 parity bit + 2 stop bits = 12 bits) for computation.
yihui 0:700cadd8b708 75 // One bit time (in us) = 1000000/_baud
yihui 0:700cadd8b708 76 // Twelve bits: 12000000/baud delay
yihui 0:700cadd8b708 77 // 1.5 frames: 18000000/baud delay
yihui 0:700cadd8b708 78 serial_break_set(&_serial);
yihui 0:700cadd8b708 79 wait_us(18000000/_baud);
yihui 0:700cadd8b708 80 serial_break_clear(&_serial);
yihui 0:700cadd8b708 81 }
yihui 0:700cadd8b708 82
yihui 0:700cadd8b708 83 #if DEVICE_SERIAL_FC
yihui 0:700cadd8b708 84 void SerialBase::set_flow_control(Flow type, PinName flow1, PinName flow2) {
yihui 0:700cadd8b708 85 FlowControl flow_type = (FlowControl)type;
yihui 0:700cadd8b708 86 switch(type) {
yihui 0:700cadd8b708 87 case RTS:
yihui 0:700cadd8b708 88 serial_set_flow_control(&_serial, flow_type, flow1, NC);
yihui 0:700cadd8b708 89 break;
yihui 0:700cadd8b708 90
yihui 0:700cadd8b708 91 case CTS:
yihui 0:700cadd8b708 92 serial_set_flow_control(&_serial, flow_type, NC, flow1);
yihui 0:700cadd8b708 93 break;
yihui 0:700cadd8b708 94
yihui 0:700cadd8b708 95 case RTSCTS:
yihui 0:700cadd8b708 96 case Disabled:
yihui 0:700cadd8b708 97 serial_set_flow_control(&_serial, flow_type, flow1, flow2);
yihui 0:700cadd8b708 98 break;
yihui 0:700cadd8b708 99
yihui 0:700cadd8b708 100 default:
yihui 0:700cadd8b708 101 break;
yihui 0:700cadd8b708 102 }
yihui 0:700cadd8b708 103 }
yihui 0:700cadd8b708 104 #endif
yihui 0:700cadd8b708 105
yihui 0:700cadd8b708 106 } // namespace mbed
yihui 0:700cadd8b708 107
yihui 0:700cadd8b708 108 #endif