mirror of https://github.com/ARMmbed/mbed-os.git
Update analogin_api.c for NRF52 SDK 14.2
Use new SDK API and fixed return value to be normalized to 16 bit as per the Mbed HAL specification.pull/6547/head
Marcus Chang
parent
64baf717e8
commit
f0d1424768
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@ -0,0 +1,50 @@
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/*
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* Copyright (c) 2018 Nordic Semiconductor ASA
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
|
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* are permitted provided that the following conditions are met:
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||||
*
|
||||
* 1. Redistributions of source code must retain the above copyright notice, this list
|
||||
* of conditions and the following disclaimer.
|
||||
*
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||||
* 2. Redistributions in binary form, except as embedded into a Nordic Semiconductor ASA
|
||||
* integrated circuit in a product or a software update for such product, must reproduce
|
||||
* the above copyright notice, this list of conditions and the following disclaimer in
|
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* the documentation and/or other materials provided with the distribution.
|
||||
*
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* 3. Neither the name of Nordic Semiconductor ASA nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software without specific prior
|
||||
* written permission.
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||||
*
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* 4. This software, with or without modification, must only be used with a
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* Nordic Semiconductor ASA integrated circuit.
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*
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* 5. Any software provided in binary or object form under this license must not be reverse
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* engineered, decompiled, modified and/or disassembled.
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||||
*
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||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
||||
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
||||
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
|
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
||||
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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||||
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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||||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#ifndef MBED_PERIPHERALPINS_H
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#define MBED_PERIPHERALPINS_H
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#include "pinmap.h"
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#include "PeripheralNames.h"
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#if DEVICE_ANALOGIN
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/************ADC***************/
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extern const PinMap PinMap_ADC[];
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#endif
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#endif // MBED_PERIPHERALPINS_H
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@ -0,0 +1,66 @@
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/*
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* Copyright (c) 2018 Nordic Semiconductor ASA
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
|
||||
* are permitted provided that the following conditions are met:
|
||||
*
|
||||
* 1. Redistributions of source code must retain the above copyright notice, this list
|
||||
* of conditions and the following disclaimer.
|
||||
*
|
||||
* 2. Redistributions in binary form, except as embedded into a Nordic Semiconductor ASA
|
||||
* integrated circuit in a product or a software update for such product, must reproduce
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||||
* the above copyright notice, this list of conditions and the following disclaimer in
|
||||
* the documentation and/or other materials provided with the distribution.
|
||||
*
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||||
* 3. Neither the name of Nordic Semiconductor ASA nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software without specific prior
|
||||
* written permission.
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*
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* 4. This software, with or without modification, must only be used with a
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* Nordic Semiconductor ASA integrated circuit.
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*
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* 5. Any software provided in binary or object form under this license must not be reverse
|
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* engineered, decompiled, modified and/or disassembled.
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||||
*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
||||
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
||||
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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||||
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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||||
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include "PeripheralPins.h"
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typedef enum {
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NRF_SAADC_CHANNEL_0 = 0,
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NRF_SAADC_CHANNEL_1 = 1,
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NRF_SAADC_CHANNEL_2 = 2,
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NRF_SAADC_CHANNEL_3 = 3,
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NRF_SAADC_CHANNEL_4 = 4,
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NRF_SAADC_CHANNEL_5 = 5,
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NRF_SAADC_CHANNEL_6 = 6,
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NRF_SAADC_CHANNEL_7 = 7,
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} nrf_saadc_channel_t;
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/************ADC***************/
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/* The third "function" value is used to select the correct ADC channel */
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#if DEVICE_ANALOGIN
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const PinMap PinMap_ADC[] = {
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{ p2, ADC0_0, NRF_SAADC_CHANNEL_0 },
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{ p3, ADC0_0, NRF_SAADC_CHANNEL_1 },
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{ p4, ADC0_0, NRF_SAADC_CHANNEL_2 },
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{ p5, ADC0_0, NRF_SAADC_CHANNEL_3 },
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{ p28, ADC0_0, NRF_SAADC_CHANNEL_4 },
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{ p29, ADC0_0, NRF_SAADC_CHANNEL_5 },
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{ p30, ADC0_0, NRF_SAADC_CHANNEL_6 },
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{ p31, ADC0_0, NRF_SAADC_CHANNEL_7 },
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{ NC, NC, NC }
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};
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#endif
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@ -2501,7 +2501,7 @@
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// <3=> 14 bit
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#ifndef SAADC_CONFIG_RESOLUTION
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#define SAADC_CONFIG_RESOLUTION 1
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#define SAADC_CONFIG_RESOLUTION 2
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#endif
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// <o> SAADC_CONFIG_OVERSAMPLE - Sample period
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@ -0,0 +1,66 @@
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/*
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* Copyright (c) 2018 Nordic Semiconductor ASA
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* All rights reserved.
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||||
*
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* Redistribution and use in source and binary forms, with or without modification,
|
||||
* are permitted provided that the following conditions are met:
|
||||
*
|
||||
* 1. Redistributions of source code must retain the above copyright notice, this list
|
||||
* of conditions and the following disclaimer.
|
||||
*
|
||||
* 2. Redistributions in binary form, except as embedded into a Nordic Semiconductor ASA
|
||||
* integrated circuit in a product or a software update for such product, must reproduce
|
||||
* the above copyright notice, this list of conditions and the following disclaimer in
|
||||
* the documentation and/or other materials provided with the distribution.
|
||||
*
|
||||
* 3. Neither the name of Nordic Semiconductor ASA nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software without specific prior
|
||||
* written permission.
|
||||
*
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||||
* 4. This software, with or without modification, must only be used with a
|
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* Nordic Semiconductor ASA integrated circuit.
|
||||
*
|
||||
* 5. Any software provided in binary or object form under this license must not be reverse
|
||||
* engineered, decompiled, modified and/or disassembled.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
||||
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
||||
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
|
||||
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
||||
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
||||
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
|
||||
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include "PeripheralPins.h"
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typedef enum {
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NRF_SAADC_CHANNEL_0 = 0,
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NRF_SAADC_CHANNEL_1 = 1,
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NRF_SAADC_CHANNEL_2 = 2,
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NRF_SAADC_CHANNEL_3 = 3,
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NRF_SAADC_CHANNEL_4 = 4,
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NRF_SAADC_CHANNEL_5 = 5,
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NRF_SAADC_CHANNEL_6 = 6,
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NRF_SAADC_CHANNEL_7 = 7,
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} nrf_saadc_channel_t;
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/************ADC***************/
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/* The third "function" value is used to select the correct ADC channel */
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#if DEVICE_ANALOGIN
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const PinMap PinMap_ADC[] = {
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{ p2, ADC0_0, NRF_SAADC_CHANNEL_0 },
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{ p3, ADC0_0, NRF_SAADC_CHANNEL_1 },
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{ p4, ADC0_0, NRF_SAADC_CHANNEL_2 },
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{ p5, ADC0_0, NRF_SAADC_CHANNEL_3 },
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{ p28, ADC0_0, NRF_SAADC_CHANNEL_4 },
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{ p29, ADC0_0, NRF_SAADC_CHANNEL_5 },
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{ p30, ADC0_0, NRF_SAADC_CHANNEL_6 },
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{ p31, ADC0_0, NRF_SAADC_CHANNEL_7 },
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{ NC, NC, NC }
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};
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#endif
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@ -2501,7 +2501,7 @@
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// <3=> 14 bit
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#ifndef SAADC_CONFIG_RESOLUTION
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#define SAADC_CONFIG_RESOLUTION 1
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#define SAADC_CONFIG_RESOLUTION 2
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#endif
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// <o> SAADC_CONFIG_OVERSAMPLE - Sample period
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@ -13,123 +13,136 @@
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#warning arm porting pending
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#ifndef TARGET_MCU_NRF51822
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#include "mbed_assert.h"
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#include "analogin_api.h"
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#include "cmsis.h"
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#ifdef DEVICE_ANALOGIN
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#include "hal/analogin_api.h"
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#include "pinmap.h"
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#include "app_util_platform.h"
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#include "PeripheralPins.h"
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#include "nrf_drv_saadc.h"
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#ifdef DEVICE_ANALOGIN
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#define ADC_12BIT_RANGE 0x0FFF
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#define ADC_16BIT_RANGE 0xFFFF
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#define ADC_12BIT_RANGE 0xFFF
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#define ADC_RANGE ADC_12BIT_RANGE
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#ifdef TARGET_SDK13
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__STATIC_INLINE nrf_saadc_input_t nrf_drv_saadc_gpio_to_ain(uint32_t pin);
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#endif
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static void analog_in_event_handler(nrf_drv_saadc_evt_t const *p_event)// type of nrf_drv_saadc_event_handler_t
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/* Unused event handler but driver requires one. */
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static void analog_in_event_handler(nrf_drv_saadc_evt_t const *p_event)
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{
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(void) p_event;
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}
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static const nrf_drv_saadc_config_t saadc_config =
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{
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.resolution = NRF_SAADC_RESOLUTION_12BIT,
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.oversample = NRF_SAADC_OVERSAMPLE_DISABLED,
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.interrupt_priority = SAADC_CONFIG_IRQ_PRIORITY
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};
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/* Interrupt handler implemented in nrf_drv_saadc.c. */
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void SAADC_IRQHandler(void);
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/** Initialize the analogin peripheral
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*
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* Configures the pin used by analogin.
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* @param obj The analogin object to initialize
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* @param pin The analogin pin name
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*/
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void analogin_init(analogin_t *obj, PinName pin)
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{
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#warning
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#if 0
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ret_code_t ret_code;
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NVIC_SetVector(SAADC_IRQn, (uint32_t)SAADC_IRQHandler);
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ret_code = nrf_drv_saadc_init(&saadc_config, analog_in_event_handler);
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MBED_ASSERT(((ret_code == NRF_SUCCESS) || (ret_code == NRF_ERROR_INVALID_STATE))); //NRF_ERROR_INVALID_STATE expected for multiple channels used.
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uint8_t saadcIn = nrf_drv_saadc_gpio_to_ain(pin);
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MBED_ASSERT(saadcIn != NRF_SAADC_INPUT_DISABLED);
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obj->adc = ADC0_0; // only one instance of ADC in nRF52 SoC
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obj->adc_pin = saadcIn - 1;
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nrf_saadc_channel_config_t channel_config =
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NRF_DRV_SAADC_DEFAULT_CHANNEL_CONFIG_SE(saadcIn); //Single ended, negative input to ADC shorted to GND.
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ret_code = nrf_drv_saadc_channel_init(obj->adc_pin, &channel_config);
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MBED_ASSERT(ret_code == NRF_SUCCESS);
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#endif
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{
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MBED_ASSERT(obj);
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/* Only initialize SAADC on first pin. */
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static bool first_init = true;
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if (first_init) {
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first_init = false;
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/* Use configuration from sdk_config.h.
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* Default is:
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* - 12 bit.
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* - No oversampling.
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* - Priority 7 (lowest).
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* - No low power mode.
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*/
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nrf_drv_saadc_config_t adc_config = {
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.resolution = (nrf_saadc_resolution_t)SAADC_CONFIG_RESOLUTION,
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.oversample = (nrf_saadc_oversample_t)SAADC_CONFIG_OVERSAMPLE,
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.interrupt_priority = SAADC_CONFIG_IRQ_PRIORITY,
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.low_power_mode = SAADC_CONFIG_LP_MODE
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};
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ret_code_t result = nrf_drv_saadc_init(&adc_config, analog_in_event_handler);
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MBED_ASSERT(result == NRF_SUCCESS);
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/* Register interrupt handler in vector table. */
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NVIC_SetVector(SAADC_IRQn, (uint32_t)SAADC_IRQHandler);
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}
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/* Use pinmap function to get associated channel. */
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uint32_t channel = pinmap_function(pin, PinMap_ADC);
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MBED_ASSERT(channel != (uint32_t) NC);
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/* Account for an off-by-one in Channel definition and Input definition. */
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nrf_saadc_input_t input = channel + 1;
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/* Configure channel and pin:
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* - the 1/4 gain and VDD/4 makes the reference voltage VDD.
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*/
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nrf_saadc_channel_config_t channel_config = {
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.resistor_p = NRF_SAADC_RESISTOR_DISABLED,
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.resistor_n = NRF_SAADC_RESISTOR_DISABLED,
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.gain = NRF_SAADC_GAIN1_4,
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.reference = NRF_SAADC_REFERENCE_VDD4,
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.acq_time = NRF_SAADC_ACQTIME_10US,
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.mode = NRF_SAADC_MODE_SINGLE_ENDED,
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.burst = NRF_SAADC_BURST_DISABLED,
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.pin_p = input,
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.pin_n = NRF_SAADC_INPUT_DISABLED
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};
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ret_code_t result = nrf_drv_saadc_channel_init(channel, &channel_config);
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MBED_ASSERT(result == NRF_SUCCESS);
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/* Store channel in ADC object. */
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obj->channel = channel;
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}
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/** Read the input voltage, represented as a float in the range [0.0, 1.0]
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*
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* @param obj The analogin object
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* @return A floating value representing the current input voltage
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*/
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uint16_t analogin_read_u16(analogin_t *obj)
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{
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int16_t adc_value;
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ret_code_t ret_code;
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{
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MBED_ASSERT(obj);
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/* Default return value is 0. */
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uint16_t retval = 0;
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ret_code = nrf_drv_saadc_sample_convert(obj->adc_pin, &adc_value);
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MBED_ASSERT(ret_code == NRF_SUCCESS);
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if (adc_value < 0)
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{
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// Even in the single ended mode measured value can be {-0}. Saturation for avoid casting to a big integer.
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return 0;
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}
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else
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{
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return (uint16_t) adc_value;
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/* Read single channel, blocking. */
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nrf_saadc_value_t value = { 0 };
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ret_code_t result = nrf_drv_saadc_sample_convert(obj->channel, &value);
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/* nrf_saadc_value_t is a signed integer. Only take the absolute value. */
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if ((result == NRF_SUCCESS) && (value > 0)) {
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/* Normalize 12 bit ADC value to 16 bit Mbed ADC range. */
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uint32_t normalized = value;
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retval = (normalized * ADC_16BIT_RANGE) / ADC_12BIT_RANGE;
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}
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return retval;
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}
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/** Read the value from analogin pin, represented as an unsigned 16bit value
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*
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* @param obj The analogin object
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* @return An unsigned 16bit value representing the current input voltage
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*/
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float analogin_read(analogin_t *obj)
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{
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uint16_t value = analogin_read_u16(obj);
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return (float)value * (1.0f / (float)ADC_RANGE);
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}
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MBED_ASSERT(obj);
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#ifdef TARGET_SDK13
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/**
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* @brief Function for converting a GPIO pin number to an analog input pin number used in the channel
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* configuration.
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*
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* @param[in] pin GPIO pin.
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*
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* @return Value representing an analog input pin. The function returns @ref NRF_SAADC_INPUT_DISABLED
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* if the specified pin is not an analog input.
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*/
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__STATIC_INLINE nrf_saadc_input_t nrf_drv_saadc_gpio_to_ain(uint32_t pin)
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{
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// AIN0 - AIN3
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if (pin >= 2 && pin <= 5)
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{
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//0 means "not connected", hence this "+ 1"
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return (nrf_saadc_input_t)(pin - 2 + 1);
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}
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// AIN4 - AIN7
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else if (pin >= 28 && pin <= 31)
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{
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return (nrf_saadc_input_t)(pin - 24 + 1);
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}
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else
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{
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return NRF_SAADC_INPUT_DISABLED;
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}
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/* Read 16 bit ADC value (using Mbed API) and convert to [0;1] range float. */
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uint16_t value = analogin_read_u16(obj);
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float result = ((float) value / (float) ADC_16BIT_RANGE);
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return result;
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}
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#endif // TARGET_SDK13
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#endif // DEVICE_ANALOGIN
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#endif // !TARGET_MCU_NRF51822
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|
|
|||
|
|
@ -73,8 +73,7 @@ struct i2c_s {
|
|||
};
|
||||
|
||||
struct analogin_s {
|
||||
ADCName adc;
|
||||
uint8_t adc_pin;
|
||||
uint8_t channel;
|
||||
};
|
||||
|
||||
struct gpio_irq_s {
|
||||
|
|
|
|||
Loading…
Reference in New Issue