mirror of
https://github.com/portapack-mayhem/mayhem-firmware.git
synced 2024-12-15 04:28:10 +00:00
288 lines
7.5 KiB
C
Executable File
288 lines
7.5 KiB
C
Executable File
/*
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ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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/**
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* @file Posix/serial_lld.c
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* @brief Posix low level simulated serial driver code.
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*
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* @addtogroup POSIX_SERIAL
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* @{
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <errno.h>
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#include <sys/ioctl.h>
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#include "ch.h"
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#include "hal.h"
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#if HAL_USE_SERIAL || defined(__DOXYGEN__)
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/*===========================================================================*/
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/* Driver exported variables. */
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/*===========================================================================*/
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/** @brief Serial driver 1 identifier.*/
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#if USE_SIM_SERIAL1 || defined(__DOXYGEN__)
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SerialDriver SD1;
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#endif
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/** @brief Serial driver 2 identifier.*/
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#if USE_SIM_SERIAL2 || defined(__DOXYGEN__)
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SerialDriver SD2;
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#endif
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/*===========================================================================*/
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/* Driver local variables and types. */
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/*===========================================================================*/
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/** @brief Driver default configuration.*/
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static const SerialConfig default_config = {
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};
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static u_long nb = 1;
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/*===========================================================================*/
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/* Driver local functions. */
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/*===========================================================================*/
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static void init(SerialDriver *sdp, uint16_t port) {
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struct sockaddr_in sad;
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struct protoent *prtp;
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int sockval = 1;
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socklen_t socklen = sizeof(sockval);
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if ((prtp = getprotobyname("tcp")) == NULL) {
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printf("%s: Error mapping protocol name to protocol number\n", sdp->com_name);
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goto abort;
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}
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sdp->com_listen = socket(PF_INET, SOCK_STREAM, prtp->p_proto);
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if (sdp->com_listen == INVALID_SOCKET) {
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printf("%s: Error creating simulator socket\n", sdp->com_name);
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goto abort;
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}
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setsockopt(sdp->com_listen, SOL_SOCKET, SO_REUSEADDR, &sockval, socklen);
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if (ioctl(sdp->com_listen, FIONBIO, &nb) != 0) {
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printf("%s: Unable to setup non blocking mode on socket\n", sdp->com_name);
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goto abort;
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}
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memset(&sad, 0, sizeof(sad));
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sad.sin_family = AF_INET;
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sad.sin_addr.s_addr = INADDR_ANY;
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sad.sin_port = htons(port);
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if (bind(sdp->com_listen, (struct sockaddr *)&sad, sizeof(sad))) {
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printf("%s: Error binding socket\n", sdp->com_name);
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goto abort;
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}
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if (listen(sdp->com_listen, 1) != 0) {
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printf("%s: Error listening socket\n", sdp->com_name);
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goto abort;
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}
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printf("Full Duplex Channel %s listening on port %d\n", sdp->com_name, port);
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return;
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abort:
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if (sdp->com_listen != INVALID_SOCKET)
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close(sdp->com_listen);
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exit(1);
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}
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static bool_t connint(SerialDriver *sdp) {
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if (sdp->com_data == INVALID_SOCKET) {
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struct sockaddr addr;
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socklen_t addrlen = sizeof(addr);
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if ((sdp->com_data = accept(sdp->com_listen, &addr, &addrlen)) == INVALID_SOCKET)
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return FALSE;
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if (ioctl(sdp->com_data, FIONBIO, &nb) != 0) {
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printf("%s: Unable to setup non blocking mode on data socket\n", sdp->com_name);
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goto abort;
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}
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chSysLockFromIsr();
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chnAddFlagsI(sdp, CHN_CONNECTED);
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chSysUnlockFromIsr();
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return TRUE;
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}
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return FALSE;
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abort:
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if (sdp->com_listen != INVALID_SOCKET)
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close(sdp->com_listen);
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if (sdp->com_data != INVALID_SOCKET)
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close(sdp->com_data);
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exit(1);
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}
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static bool_t inint(SerialDriver *sdp) {
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if (sdp->com_data != INVALID_SOCKET) {
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int i;
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uint8_t data[32];
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/*
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* Input.
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*/
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int n = recv(sdp->com_data, data, sizeof(data), 0);
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switch (n) {
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case 0:
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close(sdp->com_data);
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sdp->com_data = INVALID_SOCKET;
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chSysLockFromIsr();
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chnAddFlagsI(sdp, CHN_DISCONNECTED);
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chSysUnlockFromIsr();
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return FALSE;
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case INVALID_SOCKET:
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if (errno == EWOULDBLOCK)
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return FALSE;
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close(sdp->com_data);
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sdp->com_data = INVALID_SOCKET;
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return FALSE;
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}
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for (i = 0; i < n; i++) {
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chSysLockFromIsr();
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sdIncomingDataI(sdp, data[i]);
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chSysUnlockFromIsr();
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}
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return TRUE;
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}
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return FALSE;
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}
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static bool_t outint(SerialDriver *sdp) {
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if (sdp->com_data != INVALID_SOCKET) {
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int n;
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uint8_t data[1];
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/*
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* Input.
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*/
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chSysLockFromIsr();
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n = sdRequestDataI(sdp);
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chSysUnlockFromIsr();
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if (n < 0)
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return FALSE;
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data[0] = (uint8_t)n;
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n = send(sdp->com_data, data, sizeof(data), 0);
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switch (n) {
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case 0:
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close(sdp->com_data);
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sdp->com_data = INVALID_SOCKET;
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chSysLockFromIsr();
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chnAddFlagsI(sdp, CHN_DISCONNECTED);
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chSysUnlockFromIsr();
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return FALSE;
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case INVALID_SOCKET:
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if (errno == EWOULDBLOCK)
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return FALSE;
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close(sdp->com_data);
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sdp->com_data = INVALID_SOCKET;
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return FALSE;
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}
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return TRUE;
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}
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return FALSE;
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}
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/*===========================================================================*/
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/* Driver interrupt handlers. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver exported functions. */
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/*===========================================================================*/
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/**
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* @brief Low level serial driver initialization.
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*/
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void sd_lld_init(void) {
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#if USE_SIM_SERIAL1
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sdObjectInit(&SD1, NULL, NULL);
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SD1.com_listen = INVALID_SOCKET;
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SD1.com_data = INVALID_SOCKET;
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SD1.com_name = "SD1";
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#endif
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#if USE_SIM_SERIAL2
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sdObjectInit(&SD2, NULL, NULL);
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SD2.com_listen = INVALID_SOCKET;
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SD2.com_data = INVALID_SOCKET;
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SD2.com_name = "SD2";
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#endif
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}
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/**
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* @brief Low level serial driver configuration and (re)start.
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*
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* @param[in] sdp pointer to a @p SerialDriver object
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*/
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void sd_lld_start(SerialDriver *sdp, const SerialConfig *config) {
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if (config == NULL)
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config = &default_config;
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#if USE_SIM_SERIAL1
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if (sdp == &SD1)
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init(&SD1, SIM_SD1_PORT);
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#endif
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#if USE_SIM_SERIAL2
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if (sdp == &SD2)
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init(&SD2, SIM_SD2_PORT);
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#endif
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}
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/**
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* @brief Low level serial driver stop.
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* @details De-initializes the USART, stops the associated clock, resets the
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* interrupt vector.
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*
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* @param[in] sdp pointer to a @p SerialDriver object
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*/
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void sd_lld_stop(SerialDriver *sdp) {
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(void)sdp;
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}
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bool_t sd_lld_interrupt_pending(void) {
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bool_t b;
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CH_IRQ_PROLOGUE();
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b = connint(&SD1) || connint(&SD2) ||
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inint(&SD1) || inint(&SD2) ||
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outint(&SD1) || outint(&SD2);
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CH_IRQ_EPILOGUE();
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return b;
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}
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#endif /* HAL_USE_SERIAL */
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/** @} */
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