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mimxrt/machine_adc: Add ADC.read_uv() method.

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Matching the generic documentation.

Signed-off-by: robert-hh <robert@hammelrath.com>
This commit is contained in:
robert-hh
2024-12-06 20:38:19 +01:00
committed by Damien George
parent f1018ee5c2
commit 58f1ade318
2 changed files with 11 additions and 9 deletions
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19
ports/mimxrt/machine_adc.c
View File

@@ -41,6 +41,12 @@
// The ADC class doesn't have any constants for this port.
#define MICROPY_PY_MACHINE_ADC_CLASS_CONSTANTS
#if defined(MIMXRT117x_SERIES)
#define ADC_UV_FULL_RANGE (3840000)
#else
#define ADC_UV_FULL_RANGE (3300000)
#endif
typedef struct _machine_adc_obj_t {
mp_obj_base_t base;
ADC_Type *adc;
@@ -78,15 +84,6 @@ static mp_obj_t mp_machine_adc_make_new(const mp_obj_type_t *type, size_t n_args
ADC_Type *adc_instance = pin->adc_list[0].instance; // NOTE: we only use the first ADC assignment - multiple assignments are not supported for now
uint8_t channel = pin->adc_list[0].channel;
#if 0 // done in adc_read_u16
// Configure ADC peripheral channel
adc_channel_config_t channel_config = {
.channelNumber = (uint32_t)channel,
.enableInterruptOnConversionCompleted = false,
};
ADC_SetChannelConfig(adc_instance, 0UL, &channel_config); // NOTE: we always choose channel group '0' since we only perform software triggered conversion
#endif
// Create ADC Instance
machine_adc_obj_t *o = mp_obj_malloc(machine_adc_obj_t, &machine_adc_type);
o->adc = adc_instance;
@@ -169,3 +166,7 @@ void machine_adc_init(void) {
}
}
#endif
static mp_int_t mp_machine_adc_read_uv(machine_adc_obj_t *self) {
return (uint64_t)ADC_UV_FULL_RANGE * mp_machine_adc_read_u16(self) / 65536;
}

1
ports/mimxrt/mpconfigport.h
View File

@@ -84,6 +84,7 @@ uint32_t trng_random_u32(void);
#define MICROPY_PY_MACHINE_DISABLE_IRQ_ENABLE_IRQ (1)
#define MICROPY_PY_MACHINE_ADC (1)
#define MICROPY_PY_MACHINE_ADC_INCLUDEFILE "ports/mimxrt/machine_adc.c"
#define MICROPY_PY_MACHINE_ADC_READ_UV (1)
#define MICROPY_PY_MACHINE_PIN_MAKE_NEW mp_pin_make_new
#define MICROPY_PY_MACHINE_BITSTREAM (1)
#define MICROPY_PY_MACHINE_DHT_READINTO (1)