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frdm-kw41z: Clean up ADC configuration

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Reorder ADC lines to put the external connections first in the list.
Remove VREFH, VREFL signals. Add single ended reading of ADC0_DP
This commit is contained in:
Joakim Nohlgård 2018-08-20 15:12:20 +02:00
parent 635ecf9f1d
commit 504db007db
2 changed files with 21 additions and 20 deletions
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19
boards/frdm-kw41z/include/adc_params.h
View File

@ -32,45 +32,40 @@ extern "C" {
static const saul_adc_params_t saul_adc_params[] = static const saul_adc_params_t saul_adc_params[] =
{ {
{ {
.name = "coretemp", .name = "ADC0_DP-DM",
.line = ADC_LINE(0), .line = ADC_LINE(0),
.res = ADC_RES_16BIT, .res = ADC_RES_16BIT,
}, },
{ {
.name = "corebandgap", .name = "ADC0_DP",
.line = ADC_LINE(1), .line = ADC_LINE(1),
.res = ADC_RES_16BIT, .res = ADC_RES_16BIT,
}, },
{ {
.name = "corevrefh", .name = "PTB2",
.line = ADC_LINE(2), .line = ADC_LINE(2),
.res = ADC_RES_16BIT, .res = ADC_RES_16BIT,
}, },
{ {
.name = "corevrefl", .name = "PTB3",
.line = ADC_LINE(3), .line = ADC_LINE(3),
.res = ADC_RES_16BIT, .res = ADC_RES_16BIT,
}, },
{ {
.name = "dcdcvbat", .name = "coretemp",
.line = ADC_LINE(4), .line = ADC_LINE(4),
.res = ADC_RES_16BIT, .res = ADC_RES_16BIT,
}, },
{ {
.name = "ADC0_DP-DM", .name = "corebandgap",
.line = ADC_LINE(5), .line = ADC_LINE(5),
.res = ADC_RES_16BIT, .res = ADC_RES_16BIT,
}, },
{ {
.name = "ADC0_SE2", .name = "dcdcvbat",
.line = ADC_LINE(6), .line = ADC_LINE(6),
.res = ADC_RES_16BIT, .res = ADC_RES_16BIT,
}, },
{
.name = "ADC0_SE3",
.line = ADC_LINE(7),
.res = ADC_RES_16BIT,
},
}; };
#ifdef __cplusplus #ifdef __cplusplus

22
boards/frdm-kw41z/include/periph_conf.h
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@ -128,16 +128,22 @@ static const uart_conf_t uart_config[] = {
*/ */
static const adc_conf_t adc_config[] = { static const adc_conf_t adc_config[] = {
/* dev, pin, channel */ /* dev, pin, channel */
[ 0] = { ADC0, GPIO_UNDEF, 26 }, /* internal: temperature sensor */ /* ADC0_DP-ADC0_DM differential reading (Arduino A5 - A0) */
[ 0] = { .dev = ADC0, .pin = GPIO_UNDEF, .chan = 0 | ADC_SC1_DIFF_MASK },
/* ADC0_DP single ended reading (Arduino A5) */
[ 1] = { .dev = ADC0, .pin = GPIO_UNDEF, .chan = 0 },
/* PTB2 (Arduino A2) */
[ 2] = { .dev = ADC0, .pin = GPIO_PIN(PORT_B, 2), .chan = 3 },
/* PTB3 (Arduino A3) */
[ 3] = { .dev = ADC0, .pin = GPIO_PIN(PORT_B, 3), .chan = 2 },
/* internal: temperature sensor */
[ 4] = { .dev = ADC0, .pin = GPIO_UNDEF, .chan = 26 },
/* Note: the band gap buffer uses a bit of current and is turned off by default, /* Note: the band gap buffer uses a bit of current and is turned off by default,
* Set PMC->REGSC |= PMC_REGSC_BGBE_MASK before reading or the input will be floating */ * Set PMC->REGSC |= PMC_REGSC_BGBE_MASK before reading or the input will be floating */
[ 1] = { ADC0, GPIO_UNDEF, 27 }, /* internal: band gap */ /* internal: band gap */
[ 2] = { ADC0, GPIO_UNDEF, 29 }, /* internal: V_REFH */ [ 5] = { .dev = ADC0, .pin = GPIO_UNDEF, .chan = 27 },
[ 3] = { ADC0, GPIO_UNDEF, 30 }, /* internal: V_REFL */ /* internal: DCDC divided battery level */
[ 4] = { ADC0, GPIO_UNDEF, 23 }, /* internal: DCDC divided battery level */ [ 6] = { .dev = ADC0, .pin = GPIO_UNDEF, .chan = 23 },
[ 5] = { ADC0, GPIO_UNDEF, 0 | ADC_SC1_DIFF_MASK }, /* ADC0_DP-ADC0_DM differential reading */
[ 6] = { ADC0, GPIO_PIN(PORT_B, 3), 2 }, /* ADC0_SE2 */
[ 7] = { ADC0, GPIO_PIN(PORT_B, 2), 3 }, /* ADC0_SE3 */
}; };
#define ADC_NUMOF (sizeof(adc_config) / sizeof(adc_config[0])) #define ADC_NUMOF (sizeof(adc_config) / sizeof(adc_config[0]))
/* /*