USBHost library for WAVE file player
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USBHostSerial/USBHostSerial.cpp@13:b58a2204422f, 2013-09-16 (annotated)
- Committer:
- mbed_official
- Date:
- Mon Sep 16 15:36:24 2013 +0100
- Revision:
- 13:b58a2204422f
- Parent:
- 8:93da8ea2708b
- Child:
- 19:bd46ea19486b
Synchronized with git revision 061259c07c5cd9172d2dbfabf1f0edc51604f316
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
samux | 8:93da8ea2708b | 1 | /* mbed USBHost Library |
samux | 8:93da8ea2708b | 2 | * Copyright (c) 2006-2013 ARM Limited |
samux | 8:93da8ea2708b | 3 | * |
samux | 8:93da8ea2708b | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
samux | 8:93da8ea2708b | 5 | * you may not use this file except in compliance with the License. |
samux | 8:93da8ea2708b | 6 | * You may obtain a copy of the License at |
samux | 8:93da8ea2708b | 7 | * |
samux | 8:93da8ea2708b | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
samux | 8:93da8ea2708b | 9 | * |
samux | 8:93da8ea2708b | 10 | * Unless required by applicable law or agreed to in writing, software |
samux | 8:93da8ea2708b | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
samux | 8:93da8ea2708b | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
samux | 8:93da8ea2708b | 13 | * See the License for the specific language governing permissions and |
samux | 8:93da8ea2708b | 14 | * limitations under the License. |
samux | 8:93da8ea2708b | 15 | */ |
mbed_official | 0:a554658735bf | 16 | |
mbed_official | 0:a554658735bf | 17 | #include "USBHostSerial.h" |
mbed_official | 0:a554658735bf | 18 | |
mbed_official | 0:a554658735bf | 19 | #if USBHOST_SERIAL |
mbed_official | 0:a554658735bf | 20 | |
mbed_official | 0:a554658735bf | 21 | #include "dbg.h" |
mbed_official | 0:a554658735bf | 22 | |
samux | 4:b320d68e98e7 | 23 | #define SET_LINE_CODING 0x20 |
samux | 4:b320d68e98e7 | 24 | |
mbed_official | 0:a554658735bf | 25 | USBHostSerial::USBHostSerial(): circ_buf() { |
mbed_official | 0:a554658735bf | 26 | host = USBHost::getHostInst(); |
mbed_official | 0:a554658735bf | 27 | size_bulk_in = 0; |
mbed_official | 0:a554658735bf | 28 | size_bulk_out = 0; |
mbed_official | 0:a554658735bf | 29 | init(); |
mbed_official | 0:a554658735bf | 30 | } |
mbed_official | 0:a554658735bf | 31 | |
mbed_official | 0:a554658735bf | 32 | void USBHostSerial::init() { |
mbed_official | 0:a554658735bf | 33 | dev = NULL; |
mbed_official | 0:a554658735bf | 34 | bulk_in = NULL; |
mbed_official | 0:a554658735bf | 35 | bulk_out = NULL; |
mbed_official | 0:a554658735bf | 36 | dev_connected = false; |
mbed_official | 0:a554658735bf | 37 | serial_intf = -1; |
mbed_official | 0:a554658735bf | 38 | serial_device_found = false; |
samux | 8:93da8ea2708b | 39 | line_coding.baudrate = 9600; |
samux | 8:93da8ea2708b | 40 | line_coding.data_bits = 8; |
samux | 8:93da8ea2708b | 41 | line_coding.parity = None; |
samux | 8:93da8ea2708b | 42 | line_coding.stop_bits = 1; |
samux | 4:b320d68e98e7 | 43 | circ_buf.flush(); |
mbed_official | 0:a554658735bf | 44 | } |
mbed_official | 0:a554658735bf | 45 | |
mbed_official | 0:a554658735bf | 46 | bool USBHostSerial::connected() |
mbed_official | 0:a554658735bf | 47 | { |
mbed_official | 0:a554658735bf | 48 | return dev_connected; |
mbed_official | 0:a554658735bf | 49 | } |
mbed_official | 0:a554658735bf | 50 | |
mbed_official | 0:a554658735bf | 51 | bool USBHostSerial::connect() { |
mbed_official | 0:a554658735bf | 52 | |
mbed_official | 0:a554658735bf | 53 | if (dev_connected) { |
mbed_official | 0:a554658735bf | 54 | return true; |
mbed_official | 0:a554658735bf | 55 | } |
samux | 5:e48791a1ef18 | 56 | for (uint8_t i = 0; i < MAX_DEVICE_CONNECTED; i++) { |
mbed_official | 0:a554658735bf | 57 | if ((dev = host->getDevice(i)) != NULL) { |
samux | 4:b320d68e98e7 | 58 | |
samux | 4:b320d68e98e7 | 59 | USB_DBG("Trying to connect serial device\r\n"); |
mbed_official | 0:a554658735bf | 60 | |
mbed_official | 0:a554658735bf | 61 | if(host->enumerate(dev, this)) |
mbed_official | 0:a554658735bf | 62 | break; |
mbed_official | 0:a554658735bf | 63 | |
mbed_official | 0:a554658735bf | 64 | if (serial_device_found) { |
mbed_official | 0:a554658735bf | 65 | bulk_in = dev->getEndpoint(serial_intf, BULK_ENDPOINT, IN); |
mbed_official | 0:a554658735bf | 66 | bulk_out = dev->getEndpoint(serial_intf, BULK_ENDPOINT, OUT); |
mbed_official | 0:a554658735bf | 67 | |
mbed_official | 0:a554658735bf | 68 | if (!bulk_in || !bulk_out) |
mbed_official | 0:a554658735bf | 69 | break; |
mbed_official | 0:a554658735bf | 70 | |
samux | 4:b320d68e98e7 | 71 | USB_INFO("New Serial device: VID:%04x PID:%04x [dev: %p - intf: %d]", dev->getVid(), dev->getPid(), dev, serial_intf); |
samux | 4:b320d68e98e7 | 72 | dev->setName("Serial", serial_intf); |
mbed_official | 0:a554658735bf | 73 | host->registerDriver(dev, serial_intf, this, &USBHostSerial::init); |
mbed_official | 0:a554658735bf | 74 | |
samux | 4:b320d68e98e7 | 75 | baud(9600); |
samux | 4:b320d68e98e7 | 76 | |
mbed_official | 0:a554658735bf | 77 | size_bulk_in = bulk_in->getSize(); |
mbed_official | 0:a554658735bf | 78 | size_bulk_out = bulk_out->getSize(); |
mbed_official | 0:a554658735bf | 79 | |
mbed_official | 0:a554658735bf | 80 | bulk_in->attach(this, &USBHostSerial::rxHandler); |
mbed_official | 0:a554658735bf | 81 | bulk_out->attach(this, &USBHostSerial::txHandler); |
mbed_official | 0:a554658735bf | 82 | |
mbed_official | 0:a554658735bf | 83 | host->bulkRead(dev, bulk_in, buf, size_bulk_in, false); |
mbed_official | 0:a554658735bf | 84 | dev_connected = true; |
mbed_official | 0:a554658735bf | 85 | return true; |
mbed_official | 0:a554658735bf | 86 | } |
mbed_official | 0:a554658735bf | 87 | } |
mbed_official | 0:a554658735bf | 88 | } |
mbed_official | 0:a554658735bf | 89 | init(); |
mbed_official | 0:a554658735bf | 90 | return false; |
mbed_official | 0:a554658735bf | 91 | } |
mbed_official | 0:a554658735bf | 92 | |
mbed_official | 0:a554658735bf | 93 | void USBHostSerial::rxHandler() { |
mbed_official | 0:a554658735bf | 94 | if (bulk_in) { |
mbed_official | 0:a554658735bf | 95 | int len = bulk_in->getLengthTransferred(); |
mbed_official | 0:a554658735bf | 96 | if (bulk_in->getState() == USB_TYPE_IDLE) { |
mbed_official | 0:a554658735bf | 97 | for (int i = 0; i < len; i++) { |
mbed_official | 0:a554658735bf | 98 | circ_buf.queue(buf[i]); |
mbed_official | 0:a554658735bf | 99 | } |
mbed_official | 0:a554658735bf | 100 | rx.call(); |
samux | 4:b320d68e98e7 | 101 | host->bulkRead(dev, bulk_in, buf, size_bulk_in, false); |
mbed_official | 0:a554658735bf | 102 | } |
mbed_official | 0:a554658735bf | 103 | } |
mbed_official | 0:a554658735bf | 104 | } |
mbed_official | 0:a554658735bf | 105 | |
mbed_official | 0:a554658735bf | 106 | void USBHostSerial::txHandler() { |
mbed_official | 0:a554658735bf | 107 | if (bulk_out) { |
mbed_official | 0:a554658735bf | 108 | if (bulk_out->getState() == USB_TYPE_IDLE) { |
mbed_official | 0:a554658735bf | 109 | tx.call(); |
mbed_official | 0:a554658735bf | 110 | } |
mbed_official | 0:a554658735bf | 111 | } |
mbed_official | 0:a554658735bf | 112 | } |
mbed_official | 0:a554658735bf | 113 | |
mbed_official | 0:a554658735bf | 114 | int USBHostSerial::_putc(int c) { |
mbed_official | 0:a554658735bf | 115 | if (bulk_out) { |
mbed_official | 0:a554658735bf | 116 | if (host->bulkWrite(dev, bulk_out, (uint8_t *)&c, 1) == USB_TYPE_OK) { |
mbed_official | 0:a554658735bf | 117 | return 1; |
mbed_official | 0:a554658735bf | 118 | } |
mbed_official | 0:a554658735bf | 119 | } |
mbed_official | 0:a554658735bf | 120 | return -1; |
mbed_official | 0:a554658735bf | 121 | } |
mbed_official | 0:a554658735bf | 122 | |
samux | 4:b320d68e98e7 | 123 | void USBHostSerial::baud(int baudrate) { |
samux | 4:b320d68e98e7 | 124 | line_coding.baudrate = baudrate; |
samux | 8:93da8ea2708b | 125 | format(line_coding.data_bits, (Parity)line_coding.parity, line_coding.stop_bits); |
samux | 4:b320d68e98e7 | 126 | } |
samux | 4:b320d68e98e7 | 127 | |
samux | 4:b320d68e98e7 | 128 | void USBHostSerial::format(int bits, Parity parity, int stop_bits) { |
samux | 4:b320d68e98e7 | 129 | line_coding.data_bits = bits; |
samux | 4:b320d68e98e7 | 130 | line_coding.parity = parity; |
samux | 4:b320d68e98e7 | 131 | line_coding.stop_bits = (stop_bits == 1) ? 0 : 2; |
samux | 4:b320d68e98e7 | 132 | |
samux | 4:b320d68e98e7 | 133 | // set line coding |
mbed_official | 13:b58a2204422f | 134 | host->controlWrite( dev, |
mbed_official | 13:b58a2204422f | 135 | USB_RECIPIENT_INTERFACE | USB_HOST_TO_DEVICE | USB_REQUEST_TYPE_CLASS, |
mbed_official | 13:b58a2204422f | 136 | SET_LINE_CODING, |
mbed_official | 13:b58a2204422f | 137 | 0, serial_intf, (uint8_t *)&line_coding, 7); |
samux | 4:b320d68e98e7 | 138 | } |
mbed_official | 0:a554658735bf | 139 | |
mbed_official | 0:a554658735bf | 140 | int USBHostSerial::_getc() { |
mbed_official | 0:a554658735bf | 141 | uint8_t c = 0; |
mbed_official | 0:a554658735bf | 142 | if (bulk_in == NULL) { |
samux | 4:b320d68e98e7 | 143 | init(); |
mbed_official | 0:a554658735bf | 144 | return -1; |
mbed_official | 0:a554658735bf | 145 | } |
samux | 4:b320d68e98e7 | 146 | while (circ_buf.isEmpty()); |
mbed_official | 0:a554658735bf | 147 | circ_buf.dequeue(&c); |
mbed_official | 0:a554658735bf | 148 | return c; |
mbed_official | 0:a554658735bf | 149 | } |
mbed_official | 0:a554658735bf | 150 | |
mbed_official | 0:a554658735bf | 151 | |
mbed_official | 0:a554658735bf | 152 | uint8_t USBHostSerial::available() { |
mbed_official | 0:a554658735bf | 153 | return circ_buf.available(); |
mbed_official | 0:a554658735bf | 154 | } |
mbed_official | 0:a554658735bf | 155 | |
mbed_official | 0:a554658735bf | 156 | /*virtual*/ void USBHostSerial::setVidPid(uint16_t vid, uint16_t pid) |
mbed_official | 0:a554658735bf | 157 | { |
mbed_official | 0:a554658735bf | 158 | // we don't check VID/PID for MSD driver |
mbed_official | 0:a554658735bf | 159 | } |
mbed_official | 0:a554658735bf | 160 | |
mbed_official | 0:a554658735bf | 161 | /*virtual*/ bool USBHostSerial::parseInterface(uint8_t intf_nb, uint8_t intf_class, uint8_t intf_subclass, uint8_t intf_protocol) //Must return true if the interface should be parsed |
mbed_official | 0:a554658735bf | 162 | { |
mbed_official | 0:a554658735bf | 163 | if ((serial_intf == -1) && |
mbed_official | 0:a554658735bf | 164 | (intf_class == SERIAL_CLASS) && |
mbed_official | 0:a554658735bf | 165 | (intf_subclass == 0x00) && |
mbed_official | 0:a554658735bf | 166 | (intf_protocol == 0x00)) { |
mbed_official | 0:a554658735bf | 167 | serial_intf = intf_nb; |
mbed_official | 0:a554658735bf | 168 | return true; |
mbed_official | 0:a554658735bf | 169 | } |
mbed_official | 0:a554658735bf | 170 | return false; |
mbed_official | 0:a554658735bf | 171 | } |
mbed_official | 0:a554658735bf | 172 | |
mbed_official | 0:a554658735bf | 173 | /*virtual*/ bool USBHostSerial::useEndpoint(uint8_t intf_nb, ENDPOINT_TYPE type, ENDPOINT_DIRECTION dir) //Must return true if the endpoint will be used |
mbed_official | 0:a554658735bf | 174 | { |
mbed_official | 0:a554658735bf | 175 | if (intf_nb == serial_intf) { |
mbed_official | 0:a554658735bf | 176 | if (type == BULK_ENDPOINT) { |
mbed_official | 0:a554658735bf | 177 | serial_device_found = true; |
mbed_official | 0:a554658735bf | 178 | return true; |
mbed_official | 0:a554658735bf | 179 | } |
mbed_official | 0:a554658735bf | 180 | } |
mbed_official | 0:a554658735bf | 181 | return false; |
mbed_official | 0:a554658735bf | 182 | } |
mbed_official | 0:a554658735bf | 183 | |
mbed_official | 0:a554658735bf | 184 | #endif |