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cpu/qn908x: migrate ADC periph to ztimer

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This commit is contained in:
Alexandre Abadie 2021-12-02 13:59:42 +01:00
parent 2e0c02b25d
commit 7c34d69b84
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GPG Key ID: 1C919A403CAE1405
3 changed files with 15 additions and 3 deletions
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5
cpu/qn908x/Makefile.dep
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@ -14,4 +14,9 @@ ifneq (,$(filter periph_uart periph_i2c periph_spi,$(USEMODULE)))
USEMODULE += periph_flexcomm USEMODULE += periph_flexcomm
endif endif
ifneq (,$(filter periph_adc,$(USEMODULE)))
USEMODULE += ztimer
USEMODULE += ztimer_usec
endif
include $(RIOTCPU)/cortexm_common/Makefile.dep include $(RIOTCPU)/cortexm_common/Makefile.dep

7
cpu/qn908x/periph/Kconfig
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@ -17,3 +17,10 @@ config MODULE_PERIPH_GPIO_MUX
depends on TEST_KCONFIG depends on TEST_KCONFIG
help help
Common Pin MUX functions for qn908x CPUs. Common Pin MUX functions for qn908x CPUs.
config MODULE_PERIPH_ADC
bool "ADC peripheral driver"
depends on HAS_PERIPH_ADC
select MODULE_ZTIMER
select MODULE_ZTIMER_USEC
select MODULE_ZTIMER_PERIPH_TIMER

6
cpu/qn908x/periph/adc.c
View File

@ -41,7 +41,7 @@
#include "bitarithm.h" #include "bitarithm.h"
#include "cpu.h" #include "cpu.h"
#include "mutex.h" #include "mutex.h"
#include "xtimer.h" #include "ztimer.h"
#include "gpio_mux.h" #include "gpio_mux.h"
#include "periph/adc.h" #include "periph/adc.h"
@ -142,7 +142,7 @@ int adc_init(adc_t line)
/* Need to wait 100 us before the ADC can be used for sampling. We could /* Need to wait 100 us before the ADC can be used for sampling. We could
* in theory avoid this wait since it is only needed before adc_sample() * in theory avoid this wait since it is only needed before adc_sample()
* is called but it is short enough that it is safer to include it. */ * is called but it is short enough that it is safer to include it. */
xtimer_usleep(100u); ztimer_sleep(ZTIMER_USEC, 100u);
/* Enable the ADC clock so we can use the ADC. */ /* Enable the ADC clock so we can use the ADC. */
CLOCK_EnableClock(kCLOCK_Adc); CLOCK_EnableClock(kCLOCK_Adc);
@ -278,7 +278,7 @@ int32_t adc_sample(adc_t line, adc_res_t res) {
ADC_CFG_SCAN_INTV(4); /* Switching ADC source every 32 clock cycles. */ ADC_CFG_SCAN_INTV(4); /* Switching ADC source every 32 clock cycles. */
/* Need to wait for one ADC cycle before it can be started. */ /* Need to wait for one ADC cycle before it can be started. */
xtimer_usleep(adc_clock_cycle_us[QN908X_ADC_CLOCK]); ztimer_sleep(ZTIMER_USEC, adc_clock_cycle_us[QN908X_ADC_CLOCK]);
/* Configure the destination of the ADC value read from the interrupt. */ /* Configure the destination of the ADC value read from the interrupt. */
volatile int32_t adc_data = 0; volatile int32_t adc_data = 0;