X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;f=hardware%2Fopenbench-logic-sniffer%2Fprotocol.c;h=7b5ea6a51067566f85c66f2de2bac2801fc087ab;hb=889ef4a01cbf50d381cda0a1331b794a2c6d26c8;hp=a438bb8bb318a5fc9504e9c3d0e7b4f5a7923d3a;hpb=2239728c43aa12bcac66613bb4c84e745836d19d;p=libsigrok.git diff --git a/hardware/openbench-logic-sniffer/protocol.c b/hardware/openbench-logic-sniffer/protocol.c index a438bb8b..7b5ea6a5 100644 --- a/hardware/openbench-logic-sniffer/protocol.c +++ b/hardware/openbench-logic-sniffer/protocol.c @@ -1,7 +1,7 @@ /* - * This file is part of the sigrok project. + * This file is part of the libsigrok project. * - * Copyright (C) 2010-2012 Bert Vermeulen + * Copyright (C) 2013 Bert Vermeulen * * 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 @@ -18,6 +18,7 @@ */ #include "protocol.h" +#include extern SR_PRIV struct sr_dev_driver ols_driver_info; static struct sr_dev_driver *di = &ols_driver_info; @@ -29,7 +30,7 @@ SR_PRIV int send_shortcommand(struct sr_serial_dev_inst *serial, sr_dbg("Sending cmd 0x%.2x.", command); buf[0] = command; - if (serial_write(serial, buf, 1) != 1) + if (serial_write_blocking(serial, buf, 1) != 1) return SR_ERR; return SR_OK; @@ -46,7 +47,7 @@ SR_PRIV int send_longcommand(struct sr_serial_dev_inst *serial, buf[2] = (data & 0xff0000) >> 16; buf[3] = (data & 0xff00) >> 8; buf[4] = data & 0xff; - if (serial_write(serial, buf, 5) != 5) + if (serial_write_blocking(serial, buf, 5) != 5) return SR_ERR; return SR_OK; @@ -74,6 +75,11 @@ SR_PRIV int ols_configure_probes(const struct sr_dev_inst *sdi) if (!probe->enabled) continue; + if (probe->index >= devc->max_probes) { + sr_err("Channels over the limit of %d\n", devc->max_probes); + return SR_ERR; + } + /* * Set up the probe mask for later configuration into the * flag register. @@ -99,7 +105,7 @@ SR_PRIV int ols_configure_probes(const struct sr_dev_inst *sdi) return SR_ERR; } if (stage > devc->num_stages) - devc->num_stages = stage; + devc->num_stages = stage - 1; } return SR_OK; @@ -133,15 +139,19 @@ SR_PRIV struct dev_context *ols_dev_new(void) { struct dev_context *devc; - if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) { + if (!(devc = g_try_malloc(sizeof(struct dev_context)))) { sr_err("Device context malloc failed."); return NULL; } + /* Device-specific settings */ + devc->max_samples = devc->max_samplerate = devc->protocol_version = 0; + + /* Acquisition settings */ + devc->limit_samples = devc->capture_ratio = 0; devc->trigger_at = -1; devc->probe_mask = 0xffffffff; - devc->cur_samplerate = SR_KHZ(200); - devc->serial = NULL; + devc->flag_reg = 0; return devc; } @@ -166,7 +176,7 @@ SR_PRIV struct sr_dev_inst *get_metadata(struct sr_serial_dev_inst *serial) key = 0xff; while (key) { - if (serial_read(serial, &key, 1) != 1 || key == 0x00) + if (serial_read_blocking(serial, &key, 1) != 1 || key == 0x00) break; type = key >> 5; token = key & 0x1f; @@ -174,7 +184,7 @@ SR_PRIV struct sr_dev_inst *get_metadata(struct sr_serial_dev_inst *serial) case 0: /* NULL-terminated string */ tmp_str = g_string_new(""); - while (serial_read(serial, &tmp_c, 1) == 1 && tmp_c != '\0') + while (serial_read_blocking(serial, &tmp_c, 1) == 1 && tmp_c != '\0') g_string_append_c(tmp_str, tmp_c); sr_dbg("Got metadata key 0x%.2x value '%s'.", key, tmp_str->str); @@ -206,7 +216,7 @@ SR_PRIV struct sr_dev_inst *get_metadata(struct sr_serial_dev_inst *serial) break; case 1: /* 32-bit unsigned integer */ - if (serial_read(serial, &tmp_int, 4) != 4) + if (serial_read_blocking(serial, &tmp_int, 4) != 4) break; tmp_int = reverse32(tmp_int); sr_dbg("Got metadata key 0x%.2x value 0x%.8x.", @@ -245,7 +255,7 @@ SR_PRIV struct sr_dev_inst *get_metadata(struct sr_serial_dev_inst *serial) break; case 2: /* 8-bit unsigned integer */ - if (serial_read(serial, &tmp_c, 1) != 1) + if (serial_read_blocking(serial, &tmp_c, 1) != 1) break; sr_dbg("Got metadata key 0x%.2x value 0x%.2x.", key, tmp_c); @@ -284,23 +294,25 @@ SR_PRIV struct sr_dev_inst *get_metadata(struct sr_serial_dev_inst *serial) } SR_PRIV int ols_set_samplerate(const struct sr_dev_inst *sdi, - uint64_t samplerate, - const struct sr_samplerates *samplerates) + const uint64_t samplerate) { struct dev_context *devc; devc = sdi->priv; - if (devc->max_samplerate) { - if (samplerate > devc->max_samplerate) - return SR_ERR_SAMPLERATE; - } else if (samplerate < samplerates->low || samplerate > samplerates->high) + if (devc->max_samplerate && samplerate > devc->max_samplerate) return SR_ERR_SAMPLERATE; if (samplerate > CLOCK_RATE) { + sr_info("Enabling demux mode."); devc->flag_reg |= FLAG_DEMUX; + devc->flag_reg &= ~FLAG_FILTER; + devc->max_probes = NUM_PROBES / 2; devc->cur_samplerate_divider = (CLOCK_RATE * 2 / samplerate) - 1; } else { + sr_info("Disabling demux mode."); devc->flag_reg &= ~FLAG_DEMUX; + devc->flag_reg |= FLAG_FILTER; + devc->max_probes = NUM_PROBES; devc->cur_samplerate_divider = (CLOCK_RATE / samplerate) - 1; } @@ -311,7 +323,7 @@ SR_PRIV int ols_set_samplerate(const struct sr_dev_inst *sdi, if (devc->flag_reg & FLAG_DEMUX) devc->cur_samplerate *= 2; if (devc->cur_samplerate != samplerate) - sr_err("Can't match samplerate %" PRIu64 ", using %" + sr_info("Can't match samplerate %" PRIu64 ", using %" PRIu64 ".", samplerate, devc->cur_samplerate); return SR_OK; @@ -320,10 +332,10 @@ SR_PRIV int ols_set_samplerate(const struct sr_dev_inst *sdi, SR_PRIV void abort_acquisition(const struct sr_dev_inst *sdi) { struct sr_datafeed_packet packet; - struct dev_context *devc; + struct sr_serial_dev_inst *serial; - devc = sdi->priv; - sr_source_remove(devc->serial->fd); + serial = sdi->conn; + serial_source_remove(serial); /* Terminate session */ packet.type = SR_DF_END; @@ -332,14 +344,18 @@ SR_PRIV void abort_acquisition(const struct sr_dev_inst *sdi) SR_PRIV int ols_receive_data(int fd, int revents, void *cb_data) { + struct drv_context *drvc; + struct dev_context *devc; + struct sr_serial_dev_inst *serial; struct sr_datafeed_packet packet; struct sr_datafeed_logic logic; struct sr_dev_inst *sdi; - struct drv_context *drvc; - struct dev_context *devc; GSList *l; - int num_channels, offset, i, j; + uint32_t sample; + int num_channels, offset, j; + unsigned int i; unsigned char byte; + int serial_fd; drvc = di->priv; @@ -348,7 +364,9 @@ SR_PRIV int ols_receive_data(int fd, int revents, void *cb_data) for (l = drvc->instances; l; l = l->next) { sdi = l->data; devc = sdi->priv; - if (devc->serial->fd == fd) + serial = sdi->conn; + sp_get_port_handle(serial->data, &serial_fd); + if (serial_fd == fd) break; devc = NULL; } @@ -363,8 +381,8 @@ SR_PRIV int ols_receive_data(int fd, int revents, void *cb_data) * longer than it takes to send a byte, that means it's * finished. We'll double that to 30ms to be sure... */ - sr_source_remove(fd); - sr_source_add(fd, G_IO_IN, 30, ols_receive_data, cb_data); + serial_source_remove(serial); + serial_source_add(serial, G_IO_IN, 30, ols_receive_data, cb_data); devc->raw_sample_buf = g_try_malloc(devc->limit_samples * 4); if (!devc->raw_sample_buf) { sr_err("Sample buffer malloc failed."); @@ -375,13 +393,15 @@ SR_PRIV int ols_receive_data(int fd, int revents, void *cb_data) } num_channels = 0; - for (i = 0x20; i > 0x02; i /= 2) { - if ((devc->flag_reg & i) == 0) + + for (i = NUM_PROBES; i > 0x02; i /= 2) { + if ((devc->flag_reg & i) == 0) { num_channels++; + } } - if (revents == G_IO_IN) { - if (serial_read(devc->serial, &byte, 1) != 1) + if (revents == G_IO_IN && devc->num_samples < devc->limit_samples) { + if (serial_read_nonblocking(serial, &byte, 1) != 1) return FALSE; /* Ignore it if we've read enough. */ @@ -391,22 +411,22 @@ SR_PRIV int ols_receive_data(int fd, int revents, void *cb_data) devc->sample[devc->num_bytes++] = byte; sr_dbg("Received byte 0x%.2x.", byte); if (devc->num_bytes == num_channels) { - /* Got a full sample. */ - sr_dbg("Received sample 0x%.*x.", - devc->num_bytes * 2, *(int *)devc->sample); + /* Got a full sample. Convert from the OLS's little-endian + * sample to the local format. */ + sample = devc->sample[0] | (devc->sample[1] << 8) \ + | (devc->sample[2] << 16) | (devc->sample[3] << 24); + sr_dbg("Received sample 0x%.*x.", devc->num_bytes * 2, sample); if (devc->flag_reg & FLAG_RLE) { /* - * In RLE mode -1 should never come in as a - * sample, because bit 31 is the "count" flag. + * In RLE mode the high bit of the sample is the + * "count" flag, meaning this sample is the number + * of times the previous sample occurred. */ if (devc->sample[devc->num_bytes - 1] & 0x80) { - devc->sample[devc->num_bytes - 1] &= 0x7f; - /* - * FIXME: This will only work on - * little-endian systems. - */ - devc->rle_count = *(int *)(devc->sample); - sr_dbg("RLE count: %d.", devc->rle_count); + /* Clear the high bit. */ + sample &= ~(0x80 << (devc->num_bytes - 1) * 8); + devc->rle_count = sample; + sr_dbg("RLE count: %u.", devc->rle_count); devc->num_bytes = 0; return TRUE; } @@ -438,10 +458,13 @@ SR_PRIV int ols_receive_data(int fd, int revents, void *cb_data) * sample. */ devc->tmp_sample[i] = devc->sample[j++]; + } else if (devc->flag_reg & FLAG_DEMUX && (i > 2)) { + /* group 2 & 3 get added to 0 & 1 */ + devc->tmp_sample[i - 2] = devc->sample[j++]; } } memcpy(devc->sample, devc->tmp_sample, 4); - sr_dbg("Full sample: 0x%.8x.", *(int *)devc->sample); + sr_dbg("Full sample: 0x%.8x.", sample); } /* the OLS sends its sample buffer backwards. @@ -502,9 +525,8 @@ SR_PRIV int ols_receive_data(int fd, int revents, void *cb_data) } g_free(devc->raw_sample_buf); - serial_flush(devc->serial); + serial_flush(serial); abort_acquisition(sdi); - serial_close(devc->serial); } return TRUE;