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fx2lafw: Only sample/send analog data if analog channels are enabled.

This commit is contained in:
Uwe Hermann 2017-03-15 02:31:09 +01:00
parent 5db45cc55d
commit f9592d65e9
2 changed files with 19 additions and 8 deletions
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17
src/hardware/fx2lafw/api.c
View File

@ -878,7 +878,12 @@ static int start_transfers(const struct sr_dev_inst *sdi)
devc->submitted_transfers++;
}
if (devc->profile->dev_caps & DEV_CAPS_AX_ANALOG)
/*
* If this device has analog channels and at least one of them is
* enabled, use mso_send_data_proc() to properly handle the analog
* data. Otherwise use la_send_data_proc().
*/
if (g_slist_length(devc->enabled_analog_channels) > 0)
devc->send_data_proc = mso_send_data_proc;
else
devc->send_data_proc = la_send_data_proc;
@ -988,7 +993,8 @@ static int configure_channels(const struct sr_dev_inst *sdi)
for (l = sdi->channels, p = 0; l; l = l->next, p++) {
ch = l->data;
if ((p <= NUM_CHANNELS) && (ch->type == SR_CHANNEL_ANALOG)) {
if ((p <= NUM_CHANNELS) && (ch->type == SR_CHANNEL_ANALOG)
&& (ch->enabled)) {
num_analog++;
devc->enabled_analog_channels =
g_slist_append(devc->enabled_analog_channels, ch);
@ -997,7 +1003,10 @@ static int configure_channels(const struct sr_dev_inst *sdi)
}
}
/* Use no wide sampling if we have only the first 8 channels set. */
/*
* Use wide sampling if either any of the LA channels 8..15 is enabled
* and/or at least one analog channel is enabled.
*/
devc->sample_wide = (channel_mask > 0xff || num_analog > 0);
return SR_OK;
@ -1036,7 +1045,7 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi)
} else {
size = fx2lafw_get_buffer_size(devc);
/* Prepare for analog sampling. */
if (devc->profile->dev_caps & DEV_CAPS_AX_ANALOG) {
if (g_slist_length(devc->enabled_analog_channels) > 0) {
/* We need a buffer half the size of a transfer. */
devc->logic_buffer = g_try_malloc(size / 2);
devc->analog_buffer = g_try_malloc(

10
src/hardware/fx2lafw/protocol.c
View File

@ -126,7 +126,7 @@ SR_PRIV int fx2lafw_command_start_acquisition(const struct sr_dev_inst *sdi)
cmd.flags |= devc->sample_wide ? CMD_START_FLAGS_SAMPLE_16BIT :
CMD_START_FLAGS_SAMPLE_8BIT;
/* Enable CTL2 clock. */
cmd.flags |= (devc->profile->dev_caps & DEV_CAPS_AX_ANALOG) ? CMD_START_FLAGS_CLK_CTL2 : 0;
cmd.flags |= (g_slist_length(devc->enabled_analog_channels) > 0) ? CMD_START_FLAGS_CLK_CTL2 : 0;
/* Send the control message. */
ret = libusb_control_transfer(usb->devhdl, LIBUSB_REQUEST_TYPE_VENDOR |
@ -338,9 +338,11 @@ static void finish_acquisition(struct sr_dev_inst *sdi)
devc->num_transfers = 0;
g_free(devc->transfers);
/* Free the deinterlace buffers if we had them */
g_free(devc->logic_buffer);
g_free(devc->analog_buffer);
/* Free the deinterlace buffers if we had them. */
if (g_slist_length(devc->enabled_analog_channels) > 0) {
g_free(devc->logic_buffer);
g_free(devc->analog_buffer);
}
if (devc->stl) {
soft_trigger_logic_free(devc->stl);