X-Git-Url: http://sigrok.org/gitweb/?a=blobdiff_plain;f=output%2Fchronovu_la8.c;h=adc6ba0d67d88df1188aa5cba9c4cb7e8b70bfd9;hb=HEAD;hp=32065fd09283e23f95fbbb4eebdfd088b58e90d5;hpb=3f239f0803b9fbc073dd7abe9fc7b2a0c606fbb6;p=libsigrok.git diff --git a/output/chronovu_la8.c b/output/chronovu_la8.c deleted file mode 100644 index 32065fd0..00000000 --- a/output/chronovu_la8.c +++ /dev/null @@ -1,233 +0,0 @@ -/* - * This file is part of the libsigrok project. - * - * Copyright (C) 2011 Uwe Hermann - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#include -#include -#include -#include "libsigrok.h" -#include "libsigrok-internal.h" - -#define LOG_PREFIX "output/chronovu-la8" - -struct context { - unsigned int num_enabled_channels; - unsigned int unitsize; - uint64_t trigger_point; - uint64_t samplerate; -}; - -/** - * Check if the given samplerate is supported by the LA8 hardware. - * - * @param samplerate The samplerate (in Hz) to check. - * - * @return 1 if the samplerate is supported/valid, 0 otherwise. - */ -static int is_valid_samplerate(uint64_t samplerate) -{ - unsigned int i; - - for (i = 0; i < 255; i++) { - if (samplerate == (SR_MHZ(100) / (i + 1))) - return 1; - } - - sr_warn("%s: invalid samplerate (%" PRIu64 "Hz)", - __func__, samplerate); - - return 0; -} - -/** - * Convert a samplerate (in Hz) to the 'divcount' value the LA8 wants. - * - * LA8 hardware: sample period = (divcount + 1) * 10ns. - * Min. value for divcount: 0x00 (10ns sample period, 100MHz samplerate). - * Max. value for divcount: 0xfe (2550ns sample period, 392.15kHz samplerate). - * - * @param samplerate The samplerate in Hz. - * - * @return The divcount value as needed by the hardware, or 0xff upon errors. - */ -static uint8_t samplerate_to_divcount(uint64_t samplerate) -{ - if (samplerate == 0) { - sr_warn("%s: samplerate was 0", __func__); - return 0xff; - } - - if (!is_valid_samplerate(samplerate)) { - sr_warn("%s: can't get divcount, samplerate invalid", __func__); - return 0xff; - } - - return (SR_MHZ(100) / samplerate) - 1; -} - -static int init(struct sr_output *o) -{ - struct context *ctx; - struct sr_channel *ch; - GSList *l; - GVariant *gvar; - - if (!o) { - sr_warn("%s: o was NULL", __func__); - return SR_ERR_ARG; - } - - if (!o->sdi) { - sr_warn("%s: o->sdi was NULL", __func__); - return SR_ERR_ARG; - } - - if (!(ctx = g_try_malloc0(sizeof(struct context)))) { - sr_warn("%s: ctx malloc failed", __func__); - return SR_ERR_MALLOC; - } - - o->internal = ctx; - - /* Get the unitsize. */ - for (l = o->sdi->channels; l; l = l->next) { - ch = l->data; - if (ch->type != SR_CHANNEL_LOGIC) - continue; - if (!ch->enabled) - continue; - ctx->num_enabled_channels++; - } - ctx->unitsize = (ctx->num_enabled_channels + 7) / 8; - - if (sr_config_get(o->sdi->driver, o->sdi, NULL, SR_CONF_SAMPLERATE, - &gvar) == SR_OK) { - ctx->samplerate = g_variant_get_uint64(gvar); - g_variant_unref(gvar); - } else - ctx->samplerate = 0; - - return SR_OK; -} - -static int event(struct sr_output *o, int event_type, uint8_t **data_out, - uint64_t *length_out) -{ - struct context *ctx; - uint8_t *outbuf; - - if (!o) { - sr_warn("%s: o was NULL", __func__); - return SR_ERR_ARG; - } - - if (!(ctx = o->internal)) { - sr_warn("%s: o->internal was NULL", __func__); - return SR_ERR_ARG; - } - - if (!data_out) { - sr_warn("%s: data_out was NULL", __func__); - return SR_ERR_ARG; - } - - switch (event_type) { - case SR_DF_TRIGGER: - sr_dbg("%s: SR_DF_TRIGGER event", __func__); - /* Save the trigger point for later (SR_DF_END). */ - ctx->trigger_point = 0; /* TODO: Store _actual_ value. */ - break; - case SR_DF_END: - sr_dbg("%s: SR_DF_END event", __func__); - if (!(outbuf = g_try_malloc(4 + 1))) { - sr_warn("la8 out: %s: outbuf malloc failed", __func__); - return SR_ERR_MALLOC; - } - - /* One byte for the 'divcount' value. */ - outbuf[0] = samplerate_to_divcount(ctx->samplerate); - // if (outbuf[0] == 0xff) { - // sr_warn("%s: invalid divcount", __func__); - // return SR_ERR; - // } - - /* Four bytes (little endian) for the trigger point. */ - outbuf[1] = (ctx->trigger_point >> 0) & 0xff; - outbuf[2] = (ctx->trigger_point >> 8) & 0xff; - outbuf[3] = (ctx->trigger_point >> 16) & 0xff; - outbuf[4] = (ctx->trigger_point >> 24) & 0xff; - - *data_out = outbuf; - *length_out = 4 + 1; - g_free(o->internal); - o->internal = NULL; - break; - default: - sr_warn("%s: unsupported event type: %d", __func__, - event_type); - *data_out = NULL; - *length_out = 0; - break; - } - - return SR_OK; -} - -static int data(struct sr_output *o, const uint8_t *data_in, - uint64_t length_in, uint8_t **data_out, uint64_t *length_out) -{ - struct context *ctx; - uint8_t *outbuf; - - if (!o) { - sr_warn("%s: o was NULL", __func__); - return SR_ERR_ARG; - } - - if (!(ctx = o->internal)) { - sr_warn("%s: o->internal was NULL", __func__); - return SR_ERR_ARG; - } - - if (!data_in) { - sr_warn("%s: data_in was NULL", __func__); - return SR_ERR_ARG; - } - - if (!(outbuf = g_try_malloc0(length_in))) { - sr_warn("%s: outbuf malloc failed", __func__); - return SR_ERR_MALLOC; - } - - memcpy(outbuf, data_in, length_in); - - *data_out = outbuf; - *length_out = length_in; - - return SR_OK; -} - -SR_PRIV struct sr_output_format output_chronovu_la8 = { - .id = "chronovu-la8", - .description = "ChronoVu LA8", - .df_type = SR_DF_LOGIC, - .init = init, - .data = data, - .event = event, -};