X-Git-Url: https://sigrok.org/gitweb/?p=libsigrok.git;a=blobdiff_plain;f=hardware%2Fdemo%2Fdemo.c;h=3c6585dd0086d81fad2a7e5957a5c2357a8ff171;hp=c1faaefb0e41c6efd8d4aa4cdc05338e417ade47;hb=ba7dd8bbb8168cba432a844259a3e239aa5f36d7;hpb=2474d87e8c9b1133017a06c9ef0896626267e95b diff --git a/hardware/demo/demo.c b/hardware/demo/demo.c index c1faaefb..3c6585dd 100644 --- a/hardware/demo/demo.c +++ b/hardware/demo/demo.c @@ -1,5 +1,5 @@ /* - * This file is part of the sigrok project. + * This file is part of the libsigrok project. * * Copyright (C) 2010 Uwe Hermann * Copyright (C) 2011 Olivier Fauchon @@ -23,6 +23,7 @@ #include #include #include +#include #ifdef _WIN32 #include #include @@ -31,94 +32,121 @@ #include "libsigrok.h" #include "libsigrok-internal.h" -/* Message logging helpers with driver-specific prefix string. */ -#define DRIVER_LOG_DOMAIN "demo: " -#define sr_log(l, s, args...) sr_log(l, DRIVER_LOG_DOMAIN s, ## args) -#define sr_spew(s, args...) sr_spew(DRIVER_LOG_DOMAIN s, ## args) -#define sr_dbg(s, args...) sr_dbg(DRIVER_LOG_DOMAIN s, ## args) -#define sr_info(s, args...) sr_info(DRIVER_LOG_DOMAIN s, ## args) -#define sr_warn(s, args...) sr_warn(DRIVER_LOG_DOMAIN s, ## args) -#define sr_err(s, args...) sr_err(DRIVER_LOG_DOMAIN s, ## args) +#define LOG_PREFIX "demo" -/* TODO: Number of probes should be configurable. */ -#define NUM_PROBES 8 +#define DEFAULT_NUM_LOGIC_PROBES 8 +#define DEFAULT_NUM_ANALOG_PROBES 4 -#define DEMONAME "Demo device" +/* The size in bytes of chunks to send through the session bus. */ +#define LOGIC_BUFSIZE 4096 +/* Size of the analog pattern space per channel. */ +#define ANALOG_BUFSIZE 4096 -/* The size of chunks to send through the session bus. */ -/* TODO: Should be configurable. */ -#define BUFSIZE 4096 +#define ANALOG_AMPLITUDE 25 +#define ANALOG_SAMPLES_PER_PERIOD 20 -#define STR_PATTERN_SIGROK "sigrok" -#define STR_PATTERN_RANDOM "random" -#define STR_PATTERN_INC "incremental" -#define STR_PATTERN_ALL_LOW "all-low" -#define STR_PATTERN_ALL_HIGH "all-high" - -/* Supported patterns which we can generate */ +/* Logic patterns we can generate. */ enum { /** - * Pattern which spells "sigrok" using '0's (with '1's as "background") - * when displayed using the 'bits' output format. + * Spells "sigrok" across 8 channels using '0's (with '1's as + * "background") when displayed using the 'bits' output format. + * The pattern is repeasted every 8 channels, shifted to the right + * in time by one bit. */ PATTERN_SIGROK, - /** Pattern which consists of (pseudo-)random values on all probes. */ + /** Pseudo-random values on all channels. */ PATTERN_RANDOM, /** - * Pattern which consists of incrementing numbers. - * TODO: Better description. + * Incrementing number across 8 channels. The pattern is repeasted + * every 8 channels, shifted to the right in time by one bit. */ PATTERN_INC, - /** Pattern where all probes have a low logic state. */ + /** All channels have a low logic state. */ PATTERN_ALL_LOW, - /** Pattern where all probes have a high logic state. */ + /** All channels have a high logic state. */ PATTERN_ALL_HIGH, }; +/* Analog patterns we can generate. */ +enum { + /** + * Square wave. + */ + PATTERN_SQUARE, + PATTERN_SINE, + PATTERN_TRIANGLE, + PATTERN_SAWTOOTH, +}; + +static const char *logic_pattern_str[] = { + "sigrok", + "random", + "incremental", + "all-low", + "all-high", +}; + +static const char *analog_pattern_str[] = { + "square", + "sine", + "triangle", + "sawtooth", +}; + +struct analog_gen { + int pattern; + float pattern_data[ANALOG_BUFSIZE]; + unsigned int num_samples; + struct sr_datafeed_analog packet; +}; + /* Private, per-device-instance driver context. */ struct dev_context { int pipe_fds[2]; - GIOChannel *channels[2]; - uint8_t sample_generator; - uint64_t samples_counter; - void *cb_data; + GIOChannel *channel; + uint64_t cur_samplerate; + uint64_t limit_samples; + uint64_t limit_msec; + uint64_t logic_counter; + uint64_t analog_counter; int64_t starttime; + uint64_t step; + /* Logic */ + int32_t num_logic_channels; + unsigned int logic_unitsize; + /* There is only ever one logic channel group, so its pattern goes here. */ + uint8_t logic_pattern; + unsigned char logic_data[LOGIC_BUFSIZE]; + /* Analog */ + int32_t num_analog_channels; + GSList *analog_channel_groups; +}; + +static const int32_t scanopts[] = { + SR_CONF_NUM_LOGIC_PROBES, + SR_CONF_NUM_ANALOG_PROBES, }; -static const int hwcaps[] = { +static const int devopts[] = { SR_CONF_LOGIC_ANALYZER, SR_CONF_DEMO_DEV, SR_CONF_SAMPLERATE, - SR_CONF_PATTERN_MODE, SR_CONF_LIMIT_SAMPLES, SR_CONF_LIMIT_MSEC, - SR_CONF_CONTINUOUS, -}; - -static const struct sr_samplerates samplerates = { - .low = SR_HZ(1), - .high = SR_GHZ(1), - .step = SR_HZ(1), - .list = NULL, }; -static const char *pattern_strings[] = { - "sigrok", - "random", - "incremental", - "all-low", - "all-high", - NULL, +static const int devopts_cg[] = { + SR_CONF_PATTERN_MODE, }; -/* We name the probes 0-7 on our demo driver. */ -static const char *probe_names[NUM_PROBES + 1] = { - "0", "1", "2", "3", "4", "5", "6", "7", - NULL, +static const uint64_t samplerates[] = { + SR_HZ(1), + SR_GHZ(1), + SR_HZ(1), }; static uint8_t pattern_sigrok[] = { @@ -132,305 +160,545 @@ static uint8_t pattern_sigrok[] = { 0xbe, 0xbe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, }; -/* Private, per-device-instance driver context. */ -/* TODO: struct context as with the other drivers. */ - -/* List of struct sr_dev_inst, maintained by dev_open()/dev_close(). */ SR_PRIV struct sr_dev_driver demo_driver_info; static struct sr_dev_driver *di = &demo_driver_info; -static uint64_t cur_samplerate = SR_KHZ(200); -static uint64_t limit_samples = 0; -static uint64_t limit_msec = 0; -static int default_pattern = PATTERN_SIGROK; -static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data); +static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data); -static int clear_instances(void) -{ - /* Nothing needed so far. */ - return SR_OK; +static int init(struct sr_context *sr_ctx) +{ + return std_init(sr_ctx, di, LOG_PREFIX); } -static int hw_init(struct sr_context *sr_ctx) +static void generate_analog_pattern(const struct sr_channel_group *cg, uint64_t sample_rate) { - return std_hw_init(sr_ctx, di, DRIVER_LOG_DOMAIN); + struct analog_gen *ag; + double t, frequency; + float value; + unsigned int num_samples, i; + int last_end; + + ag = cg->priv; + num_samples = ANALOG_BUFSIZE / sizeof(float); + + sr_dbg("Generating %s pattern for channel group %s", + analog_pattern_str[ag->pattern], cg->name); + + switch (ag->pattern) { + case PATTERN_SQUARE: + value = ANALOG_AMPLITUDE; + last_end = 0; + for (i = 0; i < num_samples; i++) { + if (i % 5 == 0) + value = -value; + if (i % 10 == 0) + last_end = i - 1; + ag->pattern_data[i] = value; + } + ag->num_samples = last_end; + break; + + case PATTERN_SINE: + frequency = (double) sample_rate / ANALOG_SAMPLES_PER_PERIOD; + + /* Make sure the number of samples we put out is an integer + * multiple of our period size */ + /* FIXME we actually need only one period. A ringbuffer would be + * usefull here.*/ + while (num_samples % ANALOG_SAMPLES_PER_PERIOD != 0) + num_samples--; + + for (i = 0; i < num_samples; i++) { + t = (double) i / (double) sample_rate; + ag->pattern_data[i] = ANALOG_AMPLITUDE * + sin(2 * M_PI * frequency * t); + } + + ag->num_samples = num_samples; + break; + + case PATTERN_TRIANGLE: + frequency = (double) sample_rate / ANALOG_SAMPLES_PER_PERIOD; + + while (num_samples % ANALOG_SAMPLES_PER_PERIOD != 0) + num_samples--; + + for (i = 0; i < num_samples; i++) { + t = (double) i / (double) sample_rate; + ag->pattern_data[i] = (2 * ANALOG_AMPLITUDE / M_PI) * + asin(sin(2 * M_PI * frequency * t)); + } + + ag->num_samples = num_samples; + break; + + case PATTERN_SAWTOOTH: + frequency = (double) sample_rate / ANALOG_SAMPLES_PER_PERIOD; + + while (num_samples % ANALOG_SAMPLES_PER_PERIOD != 0) + num_samples--; + + for (i = 0; i < num_samples; i++) { + t = (double) i / (double) sample_rate; + ag->pattern_data[i] = 2 * ANALOG_AMPLITUDE * + ((t * frequency) - floor(0.5f + t * frequency)); + } + + ag->num_samples = num_samples; + break; + } } -static GSList *hw_scan(GSList *options) +static GSList *scan(GSList *options) { - struct sr_dev_inst *sdi; - struct sr_probe *probe; struct drv_context *drvc; - GSList *devices; - int i; - - (void)options; + struct dev_context *devc; + struct sr_dev_inst *sdi; + struct sr_channel *ch; + struct sr_channel_group *cg; + struct sr_config *src; + struct analog_gen *ag; + GSList *devices, *l; + int num_logic_channels, num_analog_channels, pattern, i; + char channel_name[16]; drvc = di->priv; - devices = NULL; + num_logic_channels = DEFAULT_NUM_LOGIC_PROBES; + num_analog_channels = DEFAULT_NUM_ANALOG_PROBES; + for (l = options; l; l = l->next) { + src = l->data; + switch (src->key) { + case SR_CONF_NUM_LOGIC_PROBES: + num_logic_channels = g_variant_get_int32(src->data); + break; + case SR_CONF_NUM_ANALOG_PROBES: + num_analog_channels = g_variant_get_int32(src->data); + break; + } + } - sdi = sr_dev_inst_new(0, SR_ST_ACTIVE, DEMONAME, NULL, NULL); + devices = NULL; + sdi = sr_dev_inst_new(0, SR_ST_ACTIVE, "Demo device", NULL, NULL); if (!sdi) { - sr_err("%s: sr_dev_inst_new failed", __func__); - return 0; + sr_err("Device instance creation failed."); + return NULL; } sdi->driver = di; - for (i = 0; probe_names[i]; i++) { - if (!(probe = sr_probe_new(i, SR_PROBE_LOGIC, TRUE, - probe_names[i]))) + if (!(devc = g_try_malloc(sizeof(struct dev_context)))) { + sr_err("Device context malloc failed."); + return NULL; + } + devc->cur_samplerate = SR_KHZ(200); + devc->limit_samples = 0; + devc->limit_msec = 0; + devc->step = 0; + devc->num_logic_channels = num_logic_channels; + devc->logic_unitsize = (devc->num_logic_channels + 7) / 8; + devc->logic_pattern = PATTERN_SIGROK; + devc->num_analog_channels = num_analog_channels; + devc->analog_channel_groups = NULL; + + /* Logic channels, all in one channel group. */ + if (!(cg = g_try_malloc(sizeof(struct sr_channel_group)))) + return NULL; + cg->name = g_strdup("Logic"); + cg->channels = NULL; + cg->priv = NULL; + for (i = 0; i < num_logic_channels; i++) { + sprintf(channel_name, "D%d", i); + if (!(ch = sr_probe_new(i, SR_PROBE_LOGIC, TRUE, channel_name))) + return NULL; + sdi->channels = g_slist_append(sdi->channels, ch); + cg->channels = g_slist_append(cg->channels, ch); + } + sdi->channel_groups = g_slist_append(NULL, cg); + + /* Analog channels, channel groups and pattern generators. */ + + pattern = 0; + for (i = 0; i < num_analog_channels; i++) { + sprintf(channel_name, "A%d", i); + if (!(ch = sr_probe_new(i + num_logic_channels, + SR_PROBE_ANALOG, TRUE, channel_name))) + return NULL; + sdi->channels = g_slist_append(sdi->channels, ch); + + /* Every analog channel gets its own channel group. */ + if (!(cg = g_try_malloc(sizeof(struct sr_channel_group)))) + return NULL; + cg->name = g_strdup(channel_name); + cg->channels = g_slist_append(NULL, ch); + + /* Every channel group gets a generator struct. */ + if (!(ag = g_try_malloc(sizeof(struct analog_gen)))) return NULL; - sdi->probes = g_slist_append(sdi->probes, probe); + ag->packet.channels = cg->channels; + ag->packet.mq = 0; + ag->packet.mqflags = 0; + ag->packet.unit = SR_UNIT_VOLT; + ag->packet.data = ag->pattern_data; + ag->pattern = pattern; + cg->priv = ag; + + sdi->channel_groups = g_slist_append(sdi->channel_groups, cg); + devc->analog_channel_groups = g_slist_append(devc->analog_channel_groups, cg); + + if (++pattern == ARRAY_SIZE(analog_pattern_str)) + pattern = 0; } + sdi->priv = devc; devices = g_slist_append(devices, sdi); drvc->instances = g_slist_append(drvc->instances, sdi); return devices; } -static GSList *hw_dev_list(void) +static GSList *dev_list(void) { return ((struct drv_context *)(di->priv))->instances; } -static int hw_dev_open(struct sr_dev_inst *sdi) +static int dev_open(struct sr_dev_inst *sdi) { - (void)sdi; - - /* Nothing needed so far. */ + sdi->status = SR_ST_ACTIVE; return SR_OK; } -static int hw_dev_close(struct sr_dev_inst *sdi) +static int dev_close(struct sr_dev_inst *sdi) { - (void)sdi; - - /* Nothing needed so far. */ + sdi->status = SR_ST_INACTIVE; return SR_OK; } -static int hw_cleanup(void) +static int cleanup(void) { - /* Nothing needed so far. */ - return SR_OK; + return std_dev_clear(di, NULL); } -static int config_get(int id, const void **data, const struct sr_dev_inst *sdi) +static int config_get(int id, GVariant **data, const struct sr_dev_inst *sdi, + const struct sr_channel_group *cg) { - (void)sdi; + struct dev_context *devc; + struct sr_channel *ch; + struct analog_gen *ag; + int pattern; + if (!sdi) + return SR_ERR_ARG; + + devc = sdi->priv; switch (id) { case SR_CONF_SAMPLERATE: - *data = &cur_samplerate; + *data = g_variant_new_uint64(devc->cur_samplerate); break; case SR_CONF_LIMIT_SAMPLES: - *data = &limit_samples; + *data = g_variant_new_uint64(devc->limit_samples); break; case SR_CONF_LIMIT_MSEC: - *data = &limit_msec; + *data = g_variant_new_uint64(devc->limit_msec); break; case SR_CONF_PATTERN_MODE: - switch (default_pattern) { - case PATTERN_SIGROK: - *data = STR_PATTERN_SIGROK; - break; - case PATTERN_RANDOM: - *data = STR_PATTERN_RANDOM; - break; - case PATTERN_INC: - *data = STR_PATTERN_INC; - break; - case PATTERN_ALL_LOW: - *data = STR_PATTERN_ALL_LOW; - break; - case PATTERN_ALL_HIGH: - *data = STR_PATTERN_ALL_HIGH; - break; - } + if (!cg) + return SR_ERR_CHANNEL_GROUP; + ch = cg->channels->data; + if (ch->type == SR_PROBE_LOGIC) { + pattern = devc->logic_pattern; + *data = g_variant_new_string(logic_pattern_str[pattern]); + } else if (ch->type == SR_PROBE_ANALOG) { + ag = cg->priv; + pattern = ag->pattern; + *data = g_variant_new_string(analog_pattern_str[pattern]); + } else + return SR_ERR_BUG; + break; + case SR_CONF_NUM_LOGIC_PROBES: + *data = g_variant_new_int32(devc->num_logic_channels); + break; + case SR_CONF_NUM_ANALOG_PROBES: + *data = g_variant_new_int32(devc->num_analog_channels); break; default: - return SR_ERR_ARG; + return SR_ERR_NA; } return SR_OK; } -static int config_set(int id, const void *value, const struct sr_dev_inst *sdi) +static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi, + const struct sr_channel_group *cg) { - int ret; + struct dev_context *devc; + struct analog_gen *ag; + struct sr_channel *ch; + int pattern, ret; + unsigned int i; const char *stropt; - (void)sdi; + devc = sdi->priv; - if (id == SR_CONF_SAMPLERATE) { - cur_samplerate = *(const uint64_t *)value; - sr_dbg("%s: setting samplerate to %" PRIu64, __func__, - cur_samplerate); - ret = SR_OK; - } else if (id == SR_CONF_LIMIT_SAMPLES) { - limit_msec = 0; - limit_samples = *(const uint64_t *)value; - sr_dbg("%s: setting limit_samples to %" PRIu64, __func__, - limit_samples); - ret = SR_OK; - } else if (id == SR_CONF_LIMIT_MSEC) { - limit_msec = *(const uint64_t *)value; - limit_samples = 0; - sr_dbg("%s: setting limit_msec to %" PRIu64, __func__, - limit_msec); - ret = SR_OK; - } else if (id == SR_CONF_PATTERN_MODE) { - stropt = value; - ret = SR_OK; - if (!strcmp(stropt, STR_PATTERN_SIGROK)) { - default_pattern = PATTERN_SIGROK; - } else if (!strcmp(stropt, STR_PATTERN_RANDOM)) { - default_pattern = PATTERN_RANDOM; - } else if (!strcmp(stropt, STR_PATTERN_INC)) { - default_pattern = PATTERN_INC; - } else if (!strcmp(stropt, STR_PATTERN_ALL_LOW)) { - default_pattern = PATTERN_ALL_LOW; - } else if (!strcmp(stropt, STR_PATTERN_ALL_HIGH)) { - default_pattern = PATTERN_ALL_HIGH; - } else { - ret = SR_ERR; - } - sr_dbg("%s: setting pattern to %d", __func__, default_pattern); - } else { - ret = SR_ERR; + if (sdi->status != SR_ST_ACTIVE) + return SR_ERR_DEV_CLOSED; + + ret = SR_OK; + switch (id) { + case SR_CONF_SAMPLERATE: + devc->cur_samplerate = g_variant_get_uint64(data); + sr_dbg("Setting samplerate to %" PRIu64, devc->cur_samplerate); + break; + case SR_CONF_LIMIT_SAMPLES: + devc->limit_msec = 0; + devc->limit_samples = g_variant_get_uint64(data); + sr_dbg("Setting sample limit to %" PRIu64, devc->limit_samples); + break; + case SR_CONF_LIMIT_MSEC: + devc->limit_msec = g_variant_get_uint64(data); + devc->limit_samples = 0; + sr_dbg("Setting time limit to %" PRIu64"ms", devc->limit_msec); + break; + case SR_CONF_PATTERN_MODE: + if (!cg) + return SR_ERR_CHANNEL_GROUP; + stropt = g_variant_get_string(data, NULL); + ch = cg->channels->data; + pattern = -1; + if (ch->type == SR_PROBE_LOGIC) { + for (i = 0; i < ARRAY_SIZE(logic_pattern_str); i++) { + if (!strcmp(stropt, logic_pattern_str[i])) { + pattern = i; + break; + } + } + if (pattern == -1) + return SR_ERR_ARG; + devc->logic_pattern = pattern; + + /* Might as well do this now, these are static. */ + if (pattern == PATTERN_ALL_LOW) + memset(devc->logic_data, 0x00, LOGIC_BUFSIZE); + else if (pattern == PATTERN_ALL_HIGH) + memset(devc->logic_data, 0xff, LOGIC_BUFSIZE); + sr_dbg("Setting logic pattern to %s", + logic_pattern_str[pattern]); + } else if (ch->type == SR_PROBE_ANALOG) { + for (i = 0; i < ARRAY_SIZE(analog_pattern_str); i++) { + if (!strcmp(stropt, analog_pattern_str[i])) { + pattern = i; + break; + } + } + if (pattern == -1) + return SR_ERR_ARG; + sr_dbg("Setting analog pattern for channel group %s to %s", + cg->name, analog_pattern_str[pattern]); + ag = cg->priv; + ag->pattern = pattern; + } else + return SR_ERR_BUG; + break; + default: + ret = SR_ERR_NA; } return ret; } -static int config_list(int key, const void **data, const struct sr_dev_inst *sdi) +static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi, + const struct sr_channel_group *cg) { + struct sr_channel *ch; + GVariant *gvar; + GVariantBuilder gvb; (void)sdi; - switch (key) { - case SR_CONF_DEVICE_OPTIONS: - *data = hwcaps; - break; - case SR_CONF_SAMPLERATE: - *data = &samplerates; - break; - case SR_CONF_PATTERN_MODE: - *data = &pattern_strings; - break; - default: + if (key == SR_CONF_SCAN_OPTIONS) { + *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, + scanopts, ARRAY_SIZE(scanopts), sizeof(int32_t)); + return SR_OK; + } + + if (!sdi) return SR_ERR_ARG; + + if (!cg) { + switch (key) { + case SR_CONF_DEVICE_OPTIONS: + *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, + devopts, ARRAY_SIZE(devopts), sizeof(int32_t)); + break; + case SR_CONF_SAMPLERATE: + g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}")); + gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), samplerates, + ARRAY_SIZE(samplerates), sizeof(uint64_t)); + g_variant_builder_add(&gvb, "{sv}", "samplerate-steps", gvar); + *data = g_variant_builder_end(&gvb); + break; + default: + return SR_ERR_NA; + } + } else { + ch = cg->channels->data; + switch (key) { + case SR_CONF_DEVICE_OPTIONS: + *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, + devopts_cg, ARRAY_SIZE(devopts_cg), sizeof(int32_t)); + break; + case SR_CONF_PATTERN_MODE: + if (ch->type == SR_PROBE_LOGIC) + *data = g_variant_new_strv(logic_pattern_str, + ARRAY_SIZE(logic_pattern_str)); + else if (ch->type == SR_PROBE_ANALOG) + *data = g_variant_new_strv(analog_pattern_str, + ARRAY_SIZE(analog_pattern_str)); + else + return SR_ERR_BUG; + break; + default: + return SR_ERR_NA; + } } return SR_OK; } -static void samples_generator(uint8_t *buf, uint64_t size, - struct dev_context *devc) +static void logic_generator(struct sr_dev_inst *sdi, uint64_t size) { - static uint64_t p = 0; - uint64_t i; - - /* TODO: Needed? */ - memset(buf, 0, size); - - switch (devc->sample_generator) { - case PATTERN_SIGROK: /* sigrok pattern */ - for (i = 0; i < size; i++) { - *(buf + i) = ~(pattern_sigrok[p] >> 1); - if (++p == 64) - p = 0; + struct dev_context *devc; + uint64_t i, j; + uint8_t pat; + + devc = sdi->priv; + + switch (devc->logic_pattern) { + case PATTERN_SIGROK: + memset(devc->logic_data, 0x00, size); + for (i = 0; i < size; i += devc->logic_unitsize) { + for (j = 0; j < devc->logic_unitsize; j++) { + pat = pattern_sigrok[(devc->step + j) % sizeof(pattern_sigrok)] >> 1; + devc->logic_data[i + j] = ~pat; + } + devc->step++; } break; - case PATTERN_RANDOM: /* Random */ - for (i = 0; i < size; i++) - *(buf + i) = (uint8_t)(rand() & 0xff); - break; - case PATTERN_INC: /* Simple increment */ + case PATTERN_RANDOM: for (i = 0; i < size; i++) - *(buf + i) = i; + devc->logic_data[i] = (uint8_t)(rand() & 0xff); break; - case PATTERN_ALL_LOW: /* All probes are low */ - memset(buf, 0x00, size); + case PATTERN_INC: + for (i = 0; i < size; i++) { + for (j = 0; j < devc->logic_unitsize; j++) { + devc->logic_data[i + j] = devc->step; + } + devc->step++; + } break; - case PATTERN_ALL_HIGH: /* All probes are high */ - memset(buf, 0xff, size); + case PATTERN_ALL_LOW: + case PATTERN_ALL_HIGH: + /* These were set when the pattern mode was selected. */ break; default: - sr_err("Unknown pattern: %d.", devc->sample_generator); + sr_err("Unknown pattern: %d.", devc->logic_pattern); break; } } /* Callback handling data */ -static int receive_data(int fd, int revents, void *cb_data) +static int prepare_data(int fd, int revents, void *cb_data) { - struct dev_context *devc = cb_data; + struct sr_dev_inst *sdi; + struct dev_context *devc; struct sr_datafeed_packet packet; struct sr_datafeed_logic logic; - uint8_t buf[BUFSIZE]; - static uint64_t samples_to_send, expected_samplenum, sending_now; + struct sr_channel_group *cg; + struct analog_gen *ag; + GSList *l; + uint64_t logic_todo, analog_todo, expected_samplenum, analog_samples, sending_now; int64_t time, elapsed; (void)fd; (void)revents; + sdi = cb_data; + devc = sdi->priv; + /* How many "virtual" samples should we have collected by now? */ time = g_get_monotonic_time(); elapsed = time - devc->starttime; - expected_samplenum = elapsed * cur_samplerate / 1000000; - /* Of those, how many do we still have to send? */ - samples_to_send = expected_samplenum - devc->samples_counter; + expected_samplenum = elapsed * devc->cur_samplerate / 1000000; - if (limit_samples) { - samples_to_send = MIN(samples_to_send, - limit_samples - devc->samples_counter); - } + /* Of those, how many do we still have to send? */ + logic_todo = MIN(expected_samplenum, devc->limit_samples) - devc->logic_counter; + analog_todo = MIN(expected_samplenum, devc->limit_samples) - devc->analog_counter; + + while (logic_todo || analog_todo) { + /* Logic */ + if (devc->num_logic_channels > 0 && logic_todo > 0) { + sending_now = MIN(logic_todo, + LOGIC_BUFSIZE / devc->logic_unitsize); + logic_generator(sdi, sending_now * devc->logic_unitsize); + packet.type = SR_DF_LOGIC; + packet.payload = &logic; + logic.length = sending_now * devc->logic_unitsize; + logic.unitsize = devc->logic_unitsize; + logic.data = devc->logic_data; + sr_session_send(sdi, &packet); + logic_todo -= sending_now; + devc->logic_counter += sending_now; + } - while (samples_to_send > 0) { - sending_now = MIN(samples_to_send, sizeof(buf)); - samples_to_send -= sending_now; - samples_generator(buf, sending_now, devc); - - packet.type = SR_DF_LOGIC; - packet.payload = &logic; - logic.length = sending_now; - logic.unitsize = 1; - logic.data = buf; - sr_session_send(devc->cb_data, &packet); - devc->samples_counter += sending_now; + /* Analog, one channel at a time */ + if (devc->num_analog_channels > 0 && analog_todo > 0) { + sending_now = 0; + for (l = devc->analog_channel_groups; l; l = l->next) { + cg = l->data; + ag = cg->priv; + packet.type = SR_DF_ANALOG; + packet.payload = &ag->packet; + + /* FIXME we should make sure we output a whole + * period of data before we send out again the + * beginning of our buffer. A ring buffer would + * help here as well */ + + analog_samples = MIN(analog_todo, ag->num_samples); + /* Whichever channel group gets there first. */ + sending_now = MAX(sending_now, analog_samples); + ag->packet.num_samples = analog_samples; + sr_session_send(sdi, &packet); + } + analog_todo -= sending_now; + devc->analog_counter += sending_now; + } } - if (limit_samples && devc->samples_counter >= limit_samples) { - sr_info("Requested number of samples reached."); - hw_dev_acquisition_stop(NULL, cb_data); + if (devc->logic_counter >= devc->limit_samples && + devc->analog_counter >= devc->limit_samples) { + sr_dbg("Requested number of samples reached."); + dev_acquisition_stop(sdi, cb_data); return TRUE; } return TRUE; } -static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi, - void *cb_data) +static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data) { + GSList *l; struct dev_context *devc; - (void)sdi; + if (sdi->status != SR_ST_ACTIVE) + return SR_ERR_DEV_CLOSED; - /* TODO: 'devc' is never g_free()'d? */ - if (!(devc = g_try_malloc(sizeof(struct dev_context)))) { - sr_err("%s: devc malloc failed", __func__); - return SR_ERR_MALLOC; - } - - devc->sample_generator = default_pattern; - devc->cb_data = cb_data; - devc->samples_counter = 0; + devc = sdi->priv; + if (devc->limit_samples == 0) + return SR_ERR; + devc->logic_counter = devc->analog_counter = 0; /* * Setting two channels connected by a pipe is a remnant from when the @@ -440,29 +708,29 @@ static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi, * up a timeout-based polling mechanism. */ if (pipe(devc->pipe_fds)) { - /* TODO: Better error message. */ sr_err("%s: pipe() failed", __func__); return SR_ERR; } - devc->channels[0] = g_io_channel_unix_new(devc->pipe_fds[0]); - devc->channels[1] = g_io_channel_unix_new(devc->pipe_fds[1]); + for (l = devc->analog_channel_groups; l; l = l->next) { + generate_analog_pattern(l->data, devc->cur_samplerate); + } + + devc->channel = g_io_channel_unix_new(devc->pipe_fds[0]); - g_io_channel_set_flags(devc->channels[0], G_IO_FLAG_NONBLOCK, NULL); + g_io_channel_set_flags(devc->channel, G_IO_FLAG_NONBLOCK, NULL); /* Set channel encoding to binary (default is UTF-8). */ - g_io_channel_set_encoding(devc->channels[0], NULL, NULL); - g_io_channel_set_encoding(devc->channels[1], NULL, NULL); + g_io_channel_set_encoding(devc->channel, NULL, NULL); /* Make channels to unbuffered. */ - g_io_channel_set_buffered(devc->channels[0], FALSE); - g_io_channel_set_buffered(devc->channels[1], FALSE); + g_io_channel_set_buffered(devc->channel, FALSE); - sr_session_source_add_channel(devc->channels[0], G_IO_IN | G_IO_ERR, - 40, receive_data, devc); + sr_session_source_add_channel(devc->channel, G_IO_IN | G_IO_ERR, + 40, prepare_data, (void *)sdi); /* Send header packet to the session bus. */ - std_session_send_df_header(cb_data, DRIVER_LOG_DOMAIN); + std_session_send_df_header(cb_data, LOG_PREFIX); /* We use this timestamp to decide how many more samples to send. */ devc->starttime = g_get_monotonic_time(); @@ -470,23 +738,24 @@ static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi, return SR_OK; } -static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) +static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) { struct dev_context *devc; struct sr_datafeed_packet packet; - (void)sdi; - - devc = cb_data; + (void)cb_data; - sr_dbg("Stopping aquisition."); + devc = sdi->priv; + sr_dbg("Stopping acquisition."); - sr_session_source_remove_channel(devc->channels[0]); - g_io_channel_shutdown(devc->channels[0], FALSE, NULL); + sr_session_source_remove_channel(devc->channel); + g_io_channel_shutdown(devc->channel, FALSE, NULL); + g_io_channel_unref(devc->channel); + devc->channel = NULL; /* Send last packet. */ packet.type = SR_DF_END; - sr_session_send(devc->cb_data, &packet); + sr_session_send(sdi, &packet); return SR_OK; } @@ -495,17 +764,17 @@ SR_PRIV struct sr_dev_driver demo_driver_info = { .name = "demo", .longname = "Demo driver and pattern generator", .api_version = 1, - .init = hw_init, - .cleanup = hw_cleanup, - .scan = hw_scan, - .dev_list = hw_dev_list, - .dev_clear = clear_instances, + .init = init, + .cleanup = cleanup, + .scan = scan, + .dev_list = dev_list, + .dev_clear = NULL, .config_get = config_get, .config_set = config_set, .config_list = config_list, - .dev_open = hw_dev_open, - .dev_close = hw_dev_close, - .dev_acquisition_start = hw_dev_acquisition_start, - .dev_acquisition_stop = hw_dev_acquisition_stop, + .dev_open = dev_open, + .dev_close = dev_close, + .dev_acquisition_start = dev_acquisition_start, + .dev_acquisition_stop = dev_acquisition_stop, .priv = NULL, };