adc.h¶
Low-level ADC peripheral driver interface definitions.
-
ADC_UNDEF
¶ Default ADC undefined value.
1
(UINT_MAX)
-
ADC_LINE
( x)¶ Default ADC line access macro.
1
(x)
-
enum
adc_res_t
¶ - ADC_RES_7BIT
= (0 << 4)
- ADC resolution: 7 bit.
- ADC_RES_9BIT
= (1 << 4)
- ADC resolution: 9 bit.
- ADC_RES_11BIT
- ADC resolution: 11 bit.
- ADC_RES_6BIT
= (0xa00)
- not supported by hardware
- ADC_RES_8BIT
= (0xb00)
- not supported by hardware
- ADC_RES_10BIT
= (2 << 4)
- ADC resolution: 10 bit.
- ADC_RES_12BIT
= (3 << 4)
- ADC resolution: 12 bit.
- ADC_RES_14BIT
= (0xc00)
- not supported by hardware
- ADC_RES_16BIT
= (0xd00)
- not supported by hardware
- ADC_RES_7BIT
-
unsigned int
adc_t
¶ Define default ADC type identifier.
-
int
adc_init
(adc.h::adc_t
line)¶ Initialize the given ADC line.
The ADC line is initialized in synchronous, blocking mode.
Parameters
line: line to initialize Return values
- 0 on success
- -1 on invalid ADC line
-
int
adc_sample
(adc.h::adc_t
line,cc2538/include/periph_cpu.h::adc_res_t
res)¶ Sample a value from the given ADC line.
This function blocks until the conversion has finished. Please note, that if more than one line share the same ADC device, and if these lines are sampled at the same time (e.g. from different threads), the one called secondly waits for the first to finish before its conversion starts.
Parameters
line: line to sample res: resolution to use for conversion Return values
- the sampled value on success
- -1 if resolution is not applicable