amiro-os / patches / 0006-STM32F4xx-ADC-add-AWD-support.patch @ ba75ee1d
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| 1 | 58fe0e0b | Thomas Schöpping | From: Thomas SCHÖPPING <tschoepp@techfak.uni-bielefeld.de>
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| 2 | Date: Wed, 3 Mar 2015 15:43:17 +0200
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| 3 | Subject: [PATCH] STM32F4xx: added support for the ADC analog watchdog
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| 4 | |||
| 5 | Signed-off-by: Thomas SCHÖPPING <tschoepp@techfak.uni-bielefeld.de>
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| 6 | ---
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| 7 | diff --git a/os/hal/platforms/STM32F4xx/adc_lld.c b/os/hal/platforms/STM32F4xx/adc_lld.c
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| 8 | index e5de44a..5495649 100644
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| 9 | --- a/os/hal/platforms/STM32F4xx/adc_lld.c
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| 10 | +++ b/os/hal/platforms/STM32F4xx/adc_lld.c
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| 11 | @@ -124,7 +124,10 @@ CH_IRQ_HANDLER(ADC1_2_3_IRQHandler) {
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| 12 | if (ADCD1.grpp != NULL) |
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| 13 | _adc_isr_error_code(&ADCD1, ADC_ERR_OVERFLOW); |
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| 14 | } |
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| 15 | - /* TODO: Add here analog watchdog handling.*/
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| 16 | + if (sr & ADC_SR_AWD) {
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| 17 | + if (ADCD1.grpp != NULL)
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| 18 | + _adc_isr_error_code(&ADCD1, ADC_ERR_WATCHDOG);
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| 19 | + }
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| 20 | #endif /* STM32_ADC_USE_ADC1 */ |
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| 21 | |||
| 22 | #if STM32_ADC_USE_ADC2
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| 23 | @@ -138,7 +141,10 @@ CH_IRQ_HANDLER(ADC1_2_3_IRQHandler) {
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| 24 | if (ADCD2.grpp != NULL) |
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| 25 | _adc_isr_error_code(&ADCD2, ADC_ERR_OVERFLOW); |
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| 26 | } |
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| 27 | - /* TODO: Add here analog watchdog handling.*/
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| 28 | + if (sr & ADC_SR_AWD) {
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| 29 | + if (ADCD1.grpp != NULL)
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| 30 | + _adc_isr_error_code(&ADCD2, ADC_ERR_WATCHDOG);
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| 31 | + }
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| 32 | #endif /* STM32_ADC_USE_ADC2 */ |
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| 33 | |||
| 34 | #if STM32_ADC_USE_ADC3
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| 35 | @@ -152,7 +158,10 @@ CH_IRQ_HANDLER(ADC1_2_3_IRQHandler) {
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| 36 | if (ADCD3.grpp != NULL) |
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| 37 | _adc_isr_error_code(&ADCD3, ADC_ERR_OVERFLOW); |
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| 38 | } |
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| 39 | - /* TODO: Add here analog watchdog handling.*/
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| 40 | + if (sr & ADC_SR_AWD) {
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| 41 | + if (ADCD1.grpp != NULL)
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| 42 | + _adc_isr_error_code(&ADCD3, ADC_ERR_WATCHDOG);
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| 43 | + }
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| 44 | #endif /* STM32_ADC_USE_ADC3 */ |
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| 45 | |||
| 46 | CH_IRQ_EPILOGUE(); |
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| 47 | @@ -340,6 +349,8 @@ void adc_lld_start_conversion(ADCDriver *adcp) { |
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| 48 | adcp->adc->SR = 0;
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| 49 | adcp->adc->SMPR1 = grpp->smpr1; |
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| 50 | adcp->adc->SMPR2 = grpp->smpr2; |
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| 51 | + adcp->adc->HTR = grpp->htr;
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| 52 | + adcp->adc->LTR = grpp->ltr;
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| 53 | adcp->adc->SQR1 = grpp->sqr1; |
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| 54 | adcp->adc->SQR2 = grpp->sqr2; |
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| 55 | adcp->adc->SQR3 = grpp->sqr3; |
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| 56 | diff --git a/os/hal/platforms/STM32F4xx/adc_lld.h b/os/hal/platforms/STM32F4xx/adc_lld.h
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| 57 | index 7cda791..be81ed3 100644
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| 58 | --- a/os/hal/platforms/STM32F4xx/adc_lld.h
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| 59 | +++ b/os/hal/platforms/STM32F4xx/adc_lld.h
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| 60 | @@ -306,7 +306,8 @@ typedef uint16_t adc_channels_num_t; |
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| 61 | */ |
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| 62 | typedef enum { |
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| 63 | ADC_ERR_DMAFAILURE = 0, /**< DMA operations failure. */ |
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| 64 | - ADC_ERR_OVERFLOW = 1 /**< ADC overflow condition. */
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| 65 | + ADC_ERR_OVERFLOW = 1, /**< ADC overflow condition. */
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| 66 | + ADC_ERR_WATCHDOG = 2 /**< ADC watchdog condition. */
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| 67 | } adcerror_t; |
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| 68 | |||
| 69 | /**
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| 70 | @@ -385,6 +386,16 @@ typedef struct { |
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| 71 | */ |
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| 72 | uint32_t smpr2; |
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| 73 | /**
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| 74 | + * @brief ADC watchdog higher threshold register.
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| 75 | + * @details This filed defines the higher threshold for the analog watchdog.
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| 76 | + */
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| 77 | + uint16_t htr;
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| 78 | + /**
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| 79 | + * @brief ADC watchdog lower threshold register.
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| 80 | + * @details This filed defines the lower threshold for the analog watchdog.
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| 81 | + */
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| 82 | + uint16_t ltr;
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| 83 | + /**
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| 84 | * @brief ADC SQR1 register initialization data. |
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| 85 | * @details Conversion group sequence 13...16 + sequence length. |
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| 86 | */ |
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| 87 | @@ -528,6 +539,14 @@ struct ADCDriver { |
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| 88 | #define ADC_SMPR1_SMP_VBAT(n) ((n) << 24) /**< @brief VBAT sampling time. */ |
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| 89 | /** @} */
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| 90 | |||
| 91 | +/**
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| 92 | + * @name Threshold settings helper macros
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| 93 | + * @{
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| 94 | + */
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| 95 | +#define ADC_HTR(n) ((n > ADC_HTR_HT) ? ADC_HTR_HT : n) /**< @brief higher threshold limitation */
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| 96 | +#define ADC_LTR(n) ((n > ADC_LTR_LT) ? ADC_LTR_LT : n) /**< @brief lower threshold limitation */
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| 97 | +/** @} */
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| 98 | +
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| 99 | /*===========================================================================*/
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| 100 | /* External declarations. */
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| 101 | /*===========================================================================*/ |