cc2530dk: Added a 'Serial over USB' platform process
This is based on a usb-test example by Philippe Retornaz. It has been moved to platform and modified accordingly. With this in place: - putchar() can work over USB. So we can use things like printf, slip output - USB input can be redirected to slip or serial input The example itself is no longer needed in the source tree See Pull Request #18
This commit is contained in:
George Oikonomou
parent
eabaa0c8e4
commit
2cc74c5fd4
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@ -13,6 +13,7 @@ CONTIKI_TARGET_SOURCEFILES += sensors.c smartrf-sensors.c
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CONTIKI_TARGET_SOURCEFILES += button-sensor.c adc-sensor.c
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CONTIKI_TARGET_SOURCEFILES += serial-line.c slip-arch.c slip.c
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CONTIKI_TARGET_SOURCEFILES += putchar.c debug.c
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CONTIKI_TARGET_SOURCEFILES += usb-serial.c
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CONTIKI_SOURCEFILES += $(CONTIKI_TARGET_SOURCEFILES)
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@ -57,6 +57,11 @@
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#define UART0_CONF_HIGH_SPEED 0
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#endif
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/* USB output buffering enabled by default (relevant to cc2531 builds only) */
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#ifndef USB_SERIAL_CONF_BUFFERED
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#define USB_SERIAL_CONF_BUFFERED 1
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#endif
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/* Are we a SLIP bridge? */
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#if SLIP_ARCH_CONF_ENABLE
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/* Make sure the UART is enabled, with interrupts */
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283
platform/cc2530dk/dev/usb-serial.c
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283
platform/cc2530dk/dev/usb-serial.c
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@ -0,0 +1,283 @@
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/*
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* Copyright (c) 2012, Philippe Retornaz
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* Copyright (c) 2012, EPFL STI IMT LSRO1 -- Mobots group
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote
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* products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* \file
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* Platform process which implements a UART-like functionality over
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* the cc2531 dongle's USB hardware.
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*
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* With it in place, putchar can be redirected to the USB and USB
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* incoming traffic can be handled as input
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*
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* \author
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* Philippe Retornaz (EPFL) - Original code
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* George Oikonomou - <oikonomou@users.sourceforge.net>
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* Turned this to a 'serial over USB' platform process
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*/
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#include "contiki.h"
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#include "sys/process.h"
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#include "usb/common/usb-api.h"
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#include "usb/common/cdc-acm/cdc-acm.h"
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#include "usb/common/usb.h"
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#include "usb/common/usb-arch.h"
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/*---------------------------------------------------------------------------*/
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static const struct {
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uint8_t size;
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uint8_t type;
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uint16_t langid;
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} lang_id = { sizeof(lang_id), 3, 0x0409 };
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static struct {
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uint8_t size;
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uint8_t type;
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uint16_t string[16];
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} string_serial_nr = {
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sizeof(string_serial_nr),
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3, {
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'A', 'A', 'A', 'A', 'A', 'A', 'A', 'A',
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'A', 'A', 'A', 'A', 'A', 'A', 'A', 'A'
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}
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};
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static const struct {
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uint8_t size;
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uint8_t type;
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uint16_t string[10];
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} string_manufacturer = {
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sizeof(string_manufacturer),
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3,
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{ 'E', 'P', 'F', 'L', '-', 'L', 'S', 'R', 'O', '1' }
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};
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static const struct {
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uint8_t size;
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uint8_t type;
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uint16_t string[18];
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} string_product = {
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sizeof(string_product),
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3, {
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'C', 'C', '2', '5', '3', '1', ' ',
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'D', 'e', 'v', 'e', 'l', '-', 'B', 'o', 'a', 'r', 'd'
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}
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};
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/*---------------------------------------------------------------------------*/
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#define EPIN 0x82
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#define EPOUT 0x03
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#define BUFFER_SIZE USB_EP2_SIZE
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static USBBuffer data_rx_urb;
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static USBBuffer data_tx_urb;
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static uint8_t usb_rx_data[BUFFER_SIZE];
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static uint8_t enabled = 0;
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#if USB_SERIAL_CONF_BUFFERED
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#define SLIP_END 0300
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static uint8_t usb_tx_data[BUFFER_SIZE];
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static uint8_t buffered_data = 0;
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#endif
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/* Callback to the input handler */
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static int (*input_handler)(unsigned char c);
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/*---------------------------------------------------------------------------*/
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uint8_t *
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usb_class_get_string_descriptor(uint16_t lang, uint8_t string)
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{
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switch (string) {
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case 0:
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return (uint8_t *) &lang_id;
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case 1:
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return (uint8_t *) &string_manufacturer;
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case 2:
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return (uint8_t *) &string_product;
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case 3:
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return (uint8_t *) &string_serial_nr;
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default:
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return NULL;
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}
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}
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/*---------------------------------------------------------------------------*/
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static void
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set_serial_number(void)
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{
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uint8_t i;
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uint8_t *ieee = &X_IEEE_ADDR;
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uint8_t lown, highn;
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uint8_t c;
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for(i = 0; i < 8; i++) {
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lown = ieee[i] & 0x0F;
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highn = ieee[i] >> 4;
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c = lown > 9 ? 'A' + lown - 0xA : lown + '0';
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string_serial_nr.string[14 - i * 2 + 1] = c;
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c = highn > 9 ? 'A' + highn - 0xA : highn + '0';
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string_serial_nr.string[14 - i * 2] = c;
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}
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}
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/*---------------------------------------------------------------------------*/
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static void
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queue_rx_urb(void)
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{
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data_rx_urb.flags = USB_BUFFER_PACKET_END; /* Make sure we are getting immediately the packet. */
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data_rx_urb.flags |= USB_BUFFER_NOTIFY;
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data_rx_urb.data = usb_rx_data;
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data_rx_urb.left = BUFFER_SIZE;
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data_rx_urb.next = NULL;
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usb_submit_recv_buffer(EPOUT, &data_rx_urb);
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}
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/*---------------------------------------------------------------------------*/
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static void
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do_work(void)
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{
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unsigned int events;
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events = usb_get_global_events();
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if(events & USB_EVENT_CONFIG) {
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/* Enable endpoints */
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enabled = 1;
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usb_setup_bulk_endpoint(EPIN);
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usb_setup_bulk_endpoint(EPOUT);
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queue_rx_urb();
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}
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if(events & USB_EVENT_RESET) {
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enabled = 0;
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}
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if(!enabled) {
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return;
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}
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events = usb_get_ep_events(EPOUT);
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if((events & USB_EP_EVENT_NOTIFICATION)
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&& !(data_rx_urb.flags & USB_BUFFER_SUBMITTED)) {
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if(!(data_rx_urb.flags & USB_BUFFER_FAILED)) {
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if(input_handler) {
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uint8_t len;
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uint8_t i;
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len = BUFFER_SIZE - data_rx_urb.left;
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for(i = 0; i < len; i++) {
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input_handler(usb_rx_data[i]);
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}
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}
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}
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queue_rx_urb();
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}
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}
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/*---------------------------------------------------------------------------*/
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#if USB_SERIAL_CONF_BUFFERED
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void
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usb_serial_flush()
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{
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if(buffered_data == BUFFER_SIZE) {
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data_tx_urb.flags = 0;
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} else {
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data_tx_urb.flags = USB_BUFFER_SHORT_END;
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}
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data_tx_urb.flags |= USB_BUFFER_NOTIFY;
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data_tx_urb.next = NULL;
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data_tx_urb.data = usb_tx_data;
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data_tx_urb.left = buffered_data;
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buffered_data = 0;
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usb_submit_xmit_buffer(EPIN, &data_tx_urb);
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}
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/*---------------------------------------------------------------------------*/
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void
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usb_serial_writeb(uint8_t b)
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{
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if(!enabled) {
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buffered_data = 0;
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return;
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}
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usb_tx_data[buffered_data] = b;
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buffered_data++;
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if(buffered_data == BUFFER_SIZE || b == SLIP_END || b == '\n') {
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usb_serial_flush();
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}
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}
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/*---------------------------------------------------------------------------*/
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#else
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void
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usb_serial_writeb(uint8_t b)
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{
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if(!enabled) {
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return;
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}
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data_tx_urb.flags = USB_BUFFER_SHORT_END;
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data_tx_urb.flags |= USB_BUFFER_NOTIFY;
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data_tx_urb.next = NULL;
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data_tx_urb.data = &b;
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data_tx_urb.left = 1;
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usb_submit_xmit_buffer(EPIN, &data_tx_urb);
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}
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#endif
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/*---------------------------------------------------------------------------*/
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PROCESS(usb_serial_process, "USB-Serial process");
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/*---------------------------------------------------------------------------*/
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PROCESS_THREAD(usb_serial_process, ev, data)
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{
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PROCESS_BEGIN();
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set_serial_number();
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usb_setup();
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usb_cdc_acm_setup();
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usb_set_global_event_process(&usb_serial_process);
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usb_set_ep_event_process(EPIN, &usb_serial_process);
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usb_set_ep_event_process(EPOUT, &usb_serial_process);
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while(1) {
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PROCESS_WAIT_EVENT();
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if(ev == PROCESS_EVENT_EXIT) {
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break;
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}
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if(ev == PROCESS_EVENT_POLL) {
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do_work();
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}
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}
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PROCESS_END();
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}
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/*---------------------------------------------------------------------------*/
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void
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usb_serial_set_input(int (*input)(unsigned char c))
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{
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input_handler = input;
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}
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/*---------------------------------------------------------------------------*/
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void
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usb_serial_init()
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{
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process_start(&usb_serial_process, NULL);
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}
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57
platform/cc2530dk/dev/usb-serial.h
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57
platform/cc2530dk/dev/usb-serial.h
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@ -0,0 +1,57 @@
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/*
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* Copyright (c) 2012, George Oikonomou (oikonomou@users.sourceforge.net)
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* This file is part of the Contiki operating system.
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*/
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/**
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* \file
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* Header file for cc2531's UART-like I/O over USB
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*
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* With it in place, putchar can be redirected to the USB and USB
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* incoming traffic can be handled as input
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*
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* \author
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* George Oikonomou - <oikonomou@users.sourceforge.net>
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*/
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#ifndef USB_SERIAL_H_
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#define USB_SERIAL_H_
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#include "contiki.h"
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void usb_serial_init(void);
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void usb_serial_writeb(uint8_t);
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void usb_serial_set_input(int (*input)(unsigned char c));
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#if USB_SERIAL_CONF_BUFFERED
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void usb_serial_flush(void);
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#else
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#define usb_serial_flush()
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#endif
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#endif /* USB_SERIAL_H_ */
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