64 lines
1.7 KiB
C
64 lines
1.7 KiB
C
/*
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* This file is part of the libsigrok project.
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*
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* Copyright (C) 2014 Matthias Heidbrink <m-sigrok@heidbrink.biz>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @file
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* <em>Conrad DIGI 35 CPU</em> power supply driver
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* @internal
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*/
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#include "protocol.h"
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/**
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* Send command with parameter.
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*
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* @param[in] cmd Command
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* @param[in] param Parameter (0..999, depending on command).
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*
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* @retval SR_OK Success.
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* @retval SR_ERR_ARG Invalid argument.
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* @retval SR_ERR Error.
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*/
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SR_PRIV int send_msg1(const struct sr_dev_inst *sdi, char cmd, int param)
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{
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struct sr_serial_dev_inst *serial;
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char buf[5];
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if (!sdi || !(serial = sdi->conn))
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return SR_ERR_ARG;
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snprintf(buf, sizeof(buf), "%c%03d", cmd, param);
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buf[4] = '\r';
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sr_spew("send_msg1(): %c%c%c%c\\r", buf[0], buf[1], buf[2], buf[3]);
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if (serial_write(serial, buf, sizeof(buf)) == -1) {
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sr_err("Write error for cmd=%c: %d %s", cmd, errno, strerror(errno));
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return SR_ERR;
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}
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/*
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* Wait 50ms to ensure that the device does not swallow any of the
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* following commands.
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*/
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g_usleep(50000);
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return SR_OK;
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}
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