hantek-dso: support SR_HWCAP_VDIV

This commit is contained in:
Bert Vermeulen 2012-05-17 02:03:12 +02:00
parent bd8db307da
commit 313deed219
3 changed files with 91 additions and 21 deletions

View File

@ -49,6 +49,7 @@ static int capabilities[] = {
SR_HWCAP_TRIGGER_SLOPE,
SR_HWCAP_HORIZ_TRIGGERPOS,
SR_HWCAP_FILTER,
SR_HWCAP_VDIV,
0,
};
@ -95,6 +96,21 @@ static struct sr_rational timebases[] = {
{0,0}
};
static struct sr_rational vdivs[] = {
/* millivolts */
{ 10, 1000 },
{ 20, 1000 },
{ 50, 1000 },
{ 100, 1000 },
{ 200, 1000 },
{ 500, 1000 },
/* volts */
{ 1, 1 },
{ 2, 1 },
{ 5, 1 },
{0,0}
};
static char *trigger_sources[] = {
"CH1",
"CH2",
@ -365,6 +381,9 @@ static void *hw_get_device_info(int dev_index, int dev_info_id)
case SR_DI_FILTERS:
info = filter_targets;
break;
case SR_DI_VDIVS:
info = vdivs;
break;
/* TODO remove this */
case SR_DI_CUR_SAMPLERATE:
info = &tmp;
@ -483,6 +502,20 @@ static int hw_dev_config_set(int dev_index, int hwcap, void *value)
}
g_strfreev(targets);
break;
case SR_HWCAP_VDIV:
/* TODO not supporting vdiv per channel yet */
tmp_rat = *(struct sr_rational *)value;
for (i = 0; vdivs[i].p && vdivs[i].q; i++) {
if (vdivs[i].p == tmp_rat.p
&& vdivs[i].q == tmp_rat.q) {
ctx->voltage_ch1 = i;
ctx->voltage_ch2 = i;
break;
}
}
if (vdivs[i].p == 0 && vdivs[i].q == 0)
ret = SR_ERR_ARG;
break;
default:
ret = SR_ERR_ARG;
}

View File

@ -377,16 +377,53 @@ SR_PRIV int dso_set_voltage(struct context *ctx)
int ret, tmp;
uint8_t cmdstring[8];
sr_dbg("hantek-dso: sending CMD_SET_VOLTAGE");
sr_dbg("hantek-dso: preparing CMD_SET_VOLTAGE");
memset(cmdstring, 0, sizeof(cmdstring));
cmdstring[0] = CMD_SET_VOLTAGE;
cmdstring[1] = 0x0f;
cmdstring[2] = 0x03;
cmdstring[2] |= ((2 - ctx->voltage_ch1 % 3) << 6);
cmdstring[2] |= ((2 - ctx->voltage_ch2 % 3) << 4);
cmdstring[2] = 0x30;
/* CH1 volts/div is encoded in bits 0-1 */
sr_dbg("hantek-dso: CH1 vdiv index %d", ctx->voltage_ch1);
switch (ctx->voltage_ch1) {
case VDIV_1V:
case VDIV_100MV:
case VDIV_10MV:
cmdstring[2] |= 0x00;
break;
case VDIV_2V:
case VDIV_200MV:
case VDIV_20MV:
cmdstring[2] |= 0x01;
break;
case VDIV_5V:
case VDIV_500MV:
case VDIV_50MV:
cmdstring[2] |= 0x02;
break;
}
/* CH2 volts/div is encoded in bits 2-3 */
sr_dbg("hantek-dso: CH2 vdiv index %d", ctx->voltage_ch2);
switch (ctx->voltage_ch2) {
case VDIV_1V:
case VDIV_100MV:
case VDIV_10MV:
cmdstring[2] |= 0x00;
break;
case VDIV_2V:
case VDIV_200MV:
case VDIV_20MV:
cmdstring[2] |= 0x08;
break;
case VDIV_5V:
case VDIV_500MV:
case VDIV_50MV:
cmdstring[2] |= 0x04;
break;
}
if (send_begin(ctx) != SR_OK)
return SR_ERR;
@ -397,6 +434,7 @@ cmdstring[2] = 0x30;
sr_err("Failed to set voltage: %d", ret);
return SR_ERR;
}
sr_dbg("hantek-dso: sent CMD_SET_VOLTAGE");
return SR_OK;
}
@ -559,9 +597,6 @@ SR_PRIV int dso_init(struct context *ctx)
if (dso_enable_trigger(ctx) != SR_OK)
return SR_ERR;
if (dso_force_trigger(ctx) != SR_OK)
return SR_ERR;
return SR_OK;
}

View File

@ -32,7 +32,7 @@
#define MAX_CAPTURE_EMPTY 3
#define DEFAULT_VOLTAGE VOLTAGE_2V
#define DEFAULT_VOLTAGE VDIV_500MV
#define DEFAULT_FRAMESIZE FRAMESIZE_SMALL
#define DEFAULT_TIMEBASE TIME_100us
#define DEFAULT_TRIGGER_SOURCE "CH1"
@ -67,22 +67,11 @@ enum dso_commands {
CMD_GET_CHANNELDATA,
CMD_GET_CAPTURESTATE,
CMD_SET_VOLTAGE,
/* unused */
cmdSetLogicalData,
cmdGetLogicalData
};
enum voltages {
VOLTAGE_5V = 0,
VOLTAGE_2V,
VOLTAGE_1V,
VOLTAGE_500mV,
VOLTAGE_200mV,
VOLTAGE_100mV,
VOLTAGE_50mV,
VOLTAGE_20mV,
VOLTAGE_10mV
};
enum couplings {
COUPLING_AC = 0,
COUPLING_DC,
@ -107,6 +96,19 @@ enum time_bases {
TIME_400ms
};
/* Must match the vdivs table, these are just handy indexes into it. */
enum {
VDIV_10MV,
VDIV_20MV,
VDIV_50MV,
VDIV_100MV,
VDIV_200MV,
VDIV_500MV,
VDIV_1V,
VDIV_2V,
VDIV_5V,
};
enum trigger_slopes {
SLOPE_POSITIVE = 0,
SLOPE_NEGATIVE