static int do_adc_single(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
+ char *varname = NULL;
struct udevice *dev;
unsigned int data;
- int ret, uV;
+ int ret, uV, val;
if (argc < 3)
return CMD_RET_USAGE;
+ if (argc >= 4)
+ varname = argv[3];
+
ret = adc_channel_single_shot(argv[1], simple_strtol(argv[2], NULL, 0),
&data);
if (ret) {
- printf("Error getting single shot for device %s channel %s\n",
- argv[1], argv[2]);
+ printf("Error getting single shot for device %s channel %s (ret=%d)\n",
+ argv[1], argv[2], ret);
return CMD_RET_FAILURE;
}
ret = uclass_get_device_by_name(UCLASS_ADC, argv[1], &dev);
- if (!ret && !adc_raw_to_uV(dev, data, &uV))
+ if (!ret && !adc_raw_to_uV(dev, data, &uV)) {
+ val = uV;
printf("%u, %d uV\n", data, uV);
- else
+ } else {
+ val = data;
printf("%u\n", data);
+ }
+
+ if (varname)
+ env_set_ulong(varname, val);
return CMD_RET_SUCCESS;
}
static char adc_help_text[] =
"list - list ADC devices\n"
"adc info <name> - Get ADC device info\n"
- "adc single <name> <channel> - Get Single data of ADC device channel\n"
+ "adc single <name> <channel> [varname] - Get Single data of ADC device channel\n"
"adc scan <name> [channel mask] - Scan all [or masked] ADC channels";
U_BOOT_CMD_WITH_SUBCMDS(adc, "ADC sub-system", adc_help_text,
U_BOOT_SUBCMD_MKENT(list, 1, 1, do_adc_list),
U_BOOT_SUBCMD_MKENT(info, 2, 1, do_adc_info),
- U_BOOT_SUBCMD_MKENT(single, 3, 1, do_adc_single),
+ U_BOOT_SUBCMD_MKENT(single, 4, 1, do_adc_single),
U_BOOT_SUBCMD_MKENT(scan, 3, 1, do_adc_scan));