mirror of
https://github.com/apache/nuttx.git
synced 2026-05-22 22:20:01 +08:00
Added ADC to RP2040
This commit is contained in:
curuvar
committed by
Alan Carvalho de Assis
Alan Carvalho de Assis
parent
7307b8b6d5
commit
aa6ec6518c
+3
-1
@@ -26,10 +26,12 @@
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*.sym
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*.wsp
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*.ddc
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*.dds
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*~
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.depend
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/.config
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/.config.old
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/.config.*
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/.config-*
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/.config\ *
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/.cproject
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/.gdbinit
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@@ -70,6 +70,10 @@ ifeq ($(CONFIG_WS2812),y)
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CHIP_CSRCS += rp2040_ws2812.c
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endif
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ifeq ($(CONFIG_ADC),y)
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CHIP_CSRCS += rp2040_adc.c
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endif
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ifeq ($(CONFIG_RP2040_FLASH_BOOT),y)
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ifneq ($(PICO_SDK_PATH),)
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include chip/boot2/Make.defs
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@@ -0,0 +1,120 @@
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/****************************************************************************
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* arch/arm/src/rp2040/hardware/rp2040_adc.h
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*
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* Generated from rp2040.svd originally provided by
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* Raspberry Pi (Trading) Ltd.
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*
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* Copyright 2020 (c) 2020 Raspberry Pi (Trading) Ltd.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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#ifndef __ARCH_ARM_SRC_RP2040_HARDWARE_RP2040_ADC_H
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#define __ARCH_ARM_SRC_RP2040_HARDWARE_RP2040_ADC_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include "hardware/rp2040_memorymap.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* Register offsets *********************************************************/
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#define RP2040_ADC_CS_OFFSET 0x000000 /* ADC Control and Status register */
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#define RP2040_ADC_RESULT_OFFSET 0x000004 /* ADC Results register */
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#define RP2040_ADC_FCS_OFFSET 0x000008 /* ADC FIFO Control and Status register */
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#define RP2040_ADC_FIFO_OFFSET 0x00000c /* ADC Result FIFO */
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#define RP2040_ADC_DIV_OFFSET 0x000010 /* ADC Clock Divider register */
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#define RP2040_ADC_INTR_OFFSET 0x000014 /* ADC Raw Interrupts register */
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#define RP2040_ADC_INTE_OFFSET 0x000018 /* ADC Interrupt Enable register */
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#define RP2040_ADC_INTF_OFFSET 0x00001c /* ADC Interrupt Force register */
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#define RP2040_ADC_INTS_OFFSET 0x000020 /* ADC Interrupt Status register */
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/* Register definitions *****************************************************/
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#define RP2040_ADC_CS (RP2040_ADC_BASE + RP2040_ADC_CS_OFFSET)
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#define RP2040_ADC_RESULT (RP2040_ADC_BASE + RP2040_ADC_RESULT_OFFSET)
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#define RP2040_ADC_FCS (RP2040_ADC_BASE + RP2040_ADC_FCS_OFFSET)
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#define RP2040_ADC_FIFO (RP2040_ADC_BASE + RP2040_ADC_FIFO_OFFSET)
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#define RP2040_ADC_DIV (RP2040_ADC_BASE + RP2040_ADC_DIV_OFFSET)
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#define RP2040_ADC_INTR (RP2040_ADC_BASE + RP2040_ADC_INTR_OFFSET)
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#define RP2040_ADC_INTE (RP2040_ADC_BASE + RP2040_ADC_INTE_OFFSET)
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#define RP2040_ADC_INTF (RP2040_ADC_BASE + RP2040_ADC_INTF_OFFSET)
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#define RP2040_ADC_INTS (RP2040_ADC_BASE + RP2040_ADC_INTS_OFFSET)
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/* Register bit definitions *************************************************/
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#define RP2040_ADC_CS_RROBIN_SHIFT (16)
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#define RP2040_ADC_CS_RROBIN_MASK (0x001fl << RPC2040_ADC_CS_RROBIN_SHIFT)
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#define RP2040_ADC_CS_AINSEL_SHIFT (12)
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#define RP2040_ADC_CS_AINSEL_MASK (0x0007l << RPC2040_ADC_CS_AINSEL_SHIFT)
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#define RP2040_ADC_CS_ERR_STICKY (1 << 10)
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#define RP2040_ADC_CS_ERR (1 << 9)
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#define RP2040_ADC_CS_READY (1 << 8)
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#define RP2040_ADC_CS_START_MANY (1 << 3)
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#define RP2040_ADC_CS_START_ONCE (1 << 2)
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#define RP2040_ADC_CS_TS_ENA (1 << 1)
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#define RP2040_ADC_CS_EN (1 << 0)
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#define RP2040_ADC_RESULT_VAL_MASK (0x00000fffl)
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#define RP2040_ADC_FCS_THRESH_SHIFT (24)
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#define RP2040_ADC_FCS_THRESH_MASK (0x000fl << RP2040_ADC_FCS_THRESH_SHIFT)
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#define RP2040_ADC_FCS_LEVEL_SHIFT (16)
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#define RP2040_ADC_FCS_LEVEL_MASK (0x000fl << RP2040_ADC_FCS_LEVEL_SHIFT)
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#define RP2040_ADC_FCS_OVER (1 << 11)
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#define RP2040_ADC_FCS_UNDER (1 << 10)
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#define RP2040_ADC_FCS_FULL (1 << 9)
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#define RP2040_ADC_FCS_EMPTY (1 << 8)
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#define RP2040_ADC_FCS_DREQ_EN (1 << 3)
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#define RP2040_ADC_FCS_ERR (1 << 2)
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#define RP2040_ADC_FCS_SHIFT (1 << 1)
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#define RP2040_ADC_FCS_EN (1 << 0)
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#define RP2040_ADC_FIFO_ERR (1 << 15)
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#define RP2040_ADC_FIFO_VAL_MASK (0x0fffl)
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#define RP2040_ADC_DIV_INT_SHIFT (8)
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#define RP2040_ADC_DIV_INT_MASK (0x0fffl << RP2040_ADC_DIV_INT_SHIFT)
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#define RP2040_ADC_DIV_FRAC_SHIFT (0)
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#define RP2040_ADC_DIV_FRAC_MASK (0x00ffl << RP2040_ADC_DIV_FRAC_MASK)
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#define RP2040_ADC_INTR_FIFO (1 << 0) /* Raw interrupt status */
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#define RP2040_ADC_INTE_FIFO (1 << 0) /* Set to pass interrupts */
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#define RP2040_ADC_INTF_FIFO (1 << 0) /* Write 1 to force the interrupt. */
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#define RP2040_ADC_INTS_FIFO (1 << 0) /* Masked interrupt status */
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#endif /* __ARCH_ARM_SRC_RP2040_HARDWARE_RP2040_ADC_H */
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File diff suppressed because it is too large
Load Diff
@@ -0,0 +1,108 @@
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/****************************************************************************
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* arch/arm/src/rp2040/rp2040_adc.h
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Note:
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* The ADC driver upper-half returns signed values of up to 32-bits to
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* the user and expects the high-order bits in any result to be
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* significant. So, while the RP2040 hardware returns an unsigned value
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* in the low-order 12 bits of the result register, we shift this
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* value to the high-order bits.
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*
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* The result is that to convert a 32-bit value returned from the ADC
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* driver, you should use V = ADC_AVDD * value / (2^31) where ADC_AVDD
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* is the analogue reference voltage supplied to the RP2040 chip. If
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* 8 or 16 bit values are returned the divisor would be (2^15) or (2^7)
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* respectively.
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*
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* Also, if the conversion error bit was set for a particular sample,
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* the return value will be negated. Any negative return value should
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* be treated as erroneous.
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****************************************************************************/
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#ifndef __ARCH_ARM_SRC_RP2040_RP2040_ADC_H
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#define __ARCH_ARM_SRC_RP2040_RP2040_ADC_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <debug.h>
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#include <stdbool.h>
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#ifndef __ASSEMBLY__
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#if defined(__cplusplus)
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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#ifdef CONFIG_RP2040_ADC
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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#ifdef CONFIG_ADC
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/****************************************************************************
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* Name: rp2040_adc_setup
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*
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* Description:
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* Initialize and register the ADC driver.
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*
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* Input Parameters:
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* path - Path to the ws2812 device (e.g. "/dev/adc0")
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* read_adc0 - This device reads ADC0
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* read_adc1 - This device reads ADC1
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* read_adc2 - This device reads ADC3
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* read_adc3 - This device reads ADC4
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* read_temp - This device reads the chip temperature.
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*
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* Returned Value:
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* OK on success or an ERROR on failure
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****************************************************************************/
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int rp2040_adc_setup(FAR const char *path,
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bool read_adc0,
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bool read_adc1,
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bool read_adc2,
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bool read_adc3,
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bool read_temp);
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#else /* CONFIG_ADC */
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/* ### TODO ### Add programmatic access function. */
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#endif /* CONFIG_ADC */
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#endif /* CONFIG_RP2040_ADC */
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#undef EXTERN
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#if defined(__cplusplus)
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}
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#endif
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#endif /* __ASSEMBLY__ */
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#endif /* __ARCH_ARM_SRC_RP2040_RP2040_ADC_H */
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@@ -92,4 +92,4 @@ int rp2040_ws2812_release(FAR void * driver);
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#endif
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#endif /* __ASSEMBLY__ */
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#endif /* __ARCH_ARM_SRC_RP2040_RP2040_I2C_H */
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#endif /* __ARCH_ARM_SRC_RP2040_RP2040_WS2812_H */
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@@ -3510,6 +3510,9 @@ endif
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if ARCH_CHIP_STM32
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source "boards/arm/stm32/common/Kconfig"
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endif
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if ARCH_CHIP_RP2040
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source "boards/arm/rp2040/common/Kconfig"
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endif
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endif
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config BOARD_CRASHDUMP
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@@ -14,6 +14,7 @@ Currently only the following devices are supported.
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- SPI
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- DMAC
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- PWM
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- ADC
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- USB device
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- MSC, CDC/ACM serial and these composite device are supported.
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- CDC/ACM serial device can be used for the console.
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@@ -74,6 +74,10 @@
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#define HAS_WHITE false
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#endif /* CONFIG_WS2812_HAS_WHITE */
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#if defined(CONFIG_ADC) && defined(CONFIG_RP2040_ADC)
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#include "rp2040_adc.h"
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#endif
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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@@ -462,5 +466,46 @@ int rp2040_bringup(void)
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HAS_WHITE);
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#endif
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#if defined(CONFIG_ADC) && defined(CONFIG_RP2040_ADC)
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# ifdef CONFIG_RPC2040_ADC_CHANNEL0
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# define ADC_0 true
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# else
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# define ADC_0 false
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# endif
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# ifdef CONFIG_RPC2040_ADC_CHANNEL1
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# define ADC_1 true
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# else
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# define ADC_1 false
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# endif
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# ifdef CONFIG_RPC2040_ADC_CHANNEL2
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# define ADC_2 true
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# else
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# define ADC_2 false
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# endif
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# ifdef CONFIG_RPC2040_ADC_CHANNEL3
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# define ADC_3 true
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# else
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# define ADC_3 false
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# endif
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# ifdef CONFIG_RPC2040_ADC_TEMPERATURE
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# define ADC_TEMP true
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# else
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# define ADC_TEMP false
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# endif
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ret = rp2040_adc_setup("/dev/adc0", ADC_0, ADC_1, ADC_2, ADC_3, ADC_TEMP);
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if (ret != OK)
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{
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syslog(LOG_ERR, "Failed to initialize ADC Driver: %d\n", ret);
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return ret;
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}
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#endif /* defined(CONFIG_ADC) && defined(CONFIG_RP2040_ADC) */
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return ret;
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}
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@@ -13,6 +13,7 @@ Currently only the following devices are supported.
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- SPI
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- DMAC
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- PWM
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- ADC
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- USB device
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- MSC, CDC/ACM serial and these composite device are supported.
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- CDC/ACM serial device can be used for the console.
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@@ -74,6 +74,10 @@
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#define HAS_WHITE false
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#endif /* CONFIG_WS2812_HAS_WHITE */
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#if defined(CONFIG_ADC) && defined(CONFIG_RP2040_ADC)
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#include "rp2040_adc.h"
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#endif
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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@@ -462,5 +466,46 @@ int rp2040_bringup(void)
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HAS_WHITE);
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#endif
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#if defined(CONFIG_ADC) && defined(CONFIG_RP2040_ADC)
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# ifdef CONFIG_RPC2040_ADC_CHANNEL0
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# define ADC_0 true
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# else
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# define ADC_0 false
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# endif
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# ifdef CONFIG_RPC2040_ADC_CHANNEL1
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# define ADC_1 true
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# else
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# define ADC_1 false
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# endif
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# ifdef CONFIG_RPC2040_ADC_CHANNEL2
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# define ADC_2 true
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# else
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# define ADC_2 false
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# endif
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# ifdef CONFIG_RPC2040_ADC_CHANNEL3
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# define ADC_3 true
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# else
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# define ADC_3 false
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# endif
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# ifdef CONFIG_RPC2040_ADC_TEMPERATURE
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# define ADC_TEMP true
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# else
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# define ADC_TEMP false
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# endif
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ret = rp2040_adc_setup("/dev/adc0", ADC_0, ADC_1, ADC_2, ADC_3, ADC_TEMP);
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if (ret != OK)
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{
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syslog(LOG_ERR, "Failed to initialize ADC Driver: %d\n", ret);
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return ret;
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}
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#endif /* defined(CONFIG_ADC) && defined(CONFIG_RP2040_ADC) */
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return ret;
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}
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@@ -0,0 +1,54 @@
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#
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# For a description of the syntax of this configuration file,
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# see the file kconfig-language.txt in the NuttX tools repository.
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#
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if ARCH_BOARD_RASPBERRYPI_PICO
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config RP2040_ADC
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bool "Enable ADC Support"
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default n
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---help---
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If y, the RP2040 ADC code will be built. For ADC device driver
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support you must also select "Analog-to-Digital Conversion"
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under the "Device Driver/Analog Device Support" menu.
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If the ADC device driver is not built, basic functions
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to programatically access the ADC ports will be added.
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if RP2040_ADC && ADC
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config RPC2040_ADC_CHANNEL0
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bool "Read ADC channel 0"
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default n
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---help---
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If y, then ADC0 will be read.
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config RPC2040_ADC_CHANNEL1
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bool "Read ADC channel 1"
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default n
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---help---
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If y, then ADC1 will be read.
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config RPC2040_ADC_CHANNEL2
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bool "Read ADC channel 2"
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default n
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---help---
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If y, then ADC2 will be read.
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config RPC2040_ADC_CHANNEL3
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bool "Read ADC channel 3"
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default n
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---help---
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If y, then ADC3 will be read.
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config RPC2040_ADC_TEMPERATURE
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bool "Read ADC chip temperature channel"
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default n
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---help---
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If y, then the ADC chip temperature
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will be read.
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|
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endif
|
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|
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endif
|
||||
@@ -17,6 +17,7 @@ Currently only the following devices are supported.
|
||||
- SPI
|
||||
- DMAC
|
||||
- PWM
|
||||
- ADC
|
||||
- USB device
|
||||
- MSC, CDC/ACM serial and these composite device are supported.
|
||||
- CDC/ACM serial device can be used for the console.
|
||||
|
||||
@@ -38,6 +38,10 @@
|
||||
#include "rp2040_pwmdev.h"
|
||||
#endif
|
||||
|
||||
#if defined(CONFIG_ADC) && defined(CONFIG_RP2040_ADC)
|
||||
#include "rp2040_adc.h"
|
||||
#endif
|
||||
|
||||
#if defined(CONFIG_RP2040_BOARD_HAS_WS2812) && defined(CONFIG_WS2812)
|
||||
#include "rp2040_ws2812.h"
|
||||
#endif
|
||||
@@ -408,6 +412,49 @@ int rp2040_bringup(void)
|
||||
# endif
|
||||
#endif
|
||||
|
||||
/* Initialize ADC */
|
||||
|
||||
#if defined(CONFIG_ADC) && defined(CONFIG_RP2040_ADC)
|
||||
|
||||
# ifdef CONFIG_RPC2040_ADC_CHANNEL0
|
||||
# define ADC_0 true
|
||||
# else
|
||||
# define ADC_0 false
|
||||
# endif
|
||||
|
||||
# ifdef CONFIG_RPC2040_ADC_CHANNEL1
|
||||
# define ADC_1 true
|
||||
# else
|
||||
# define ADC_1 false
|
||||
# endif
|
||||
|
||||
# ifdef CONFIG_RPC2040_ADC_CHANNEL2
|
||||
# define ADC_2 true
|
||||
# else
|
||||
# define ADC_2 false
|
||||
# endif
|
||||
|
||||
# ifdef CONFIG_RPC2040_ADC_CHANNEL3
|
||||
# define ADC_3 true
|
||||
# else
|
||||
# define ADC_3 false
|
||||
# endif
|
||||
|
||||
# ifdef CONFIG_RPC2040_ADC_TEMPERATURE
|
||||
# define ADC_TEMP true
|
||||
# else
|
||||
# define ADC_TEMP false
|
||||
# endif
|
||||
|
||||
ret = rp2040_adc_setup("/dev/adc0", ADC_0, ADC_1, ADC_2, ADC_3, ADC_TEMP);
|
||||
if (ret != OK)
|
||||
{
|
||||
syslog(LOG_ERR, "Failed to initialize ADC Driver: %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
#endif /* defined(CONFIG_ADC) && defined(CONFIG_RP2040_ADC) */
|
||||
|
||||
/* Initialize board neo-pixel */
|
||||
|
||||
#if defined(CONFIG_RP2040_BOARD_HAS_WS2812) && defined(CONFIG_WS2812)
|
||||
|
||||
@@ -14,6 +14,7 @@ Currently only the following devices are supported.
|
||||
- SPI
|
||||
- DMAC
|
||||
- PWM
|
||||
- ADC
|
||||
- USB device
|
||||
- MSC, CDC/ACM serial and these composite device are supported.
|
||||
- CDC/ACM serial device can be used for the console.
|
||||
|
||||
@@ -64,6 +64,10 @@
|
||||
#include "rp2040_pwmdev.h"
|
||||
#endif
|
||||
|
||||
#if defined(CONFIG_ADC) && defined(CONFIG_RP2040_ADC)
|
||||
#include "rp2040_adc.h"
|
||||
#endif
|
||||
|
||||
#if defined(CONFIG_RP2040_BOARD_HAS_WS2812) && defined(CONFIG_WS2812)
|
||||
#include "rp2040_ws2812.h"
|
||||
#endif
|
||||
@@ -487,6 +491,49 @@ int rp2040_bringup(void)
|
||||
}
|
||||
#endif
|
||||
|
||||
/* Initialize ADC */
|
||||
|
||||
#if defined(CONFIG_ADC) && defined(CONFIG_RP2040_ADC)
|
||||
|
||||
# ifdef CONFIG_RPC2040_ADC_CHANNEL0
|
||||
# define ADC_0 true
|
||||
# else
|
||||
# define ADC_0 false
|
||||
# endif
|
||||
|
||||
# ifdef CONFIG_RPC2040_ADC_CHANNEL1
|
||||
# define ADC_1 true
|
||||
# else
|
||||
# define ADC_1 false
|
||||
# endif
|
||||
|
||||
# ifdef CONFIG_RPC2040_ADC_CHANNEL2
|
||||
# define ADC_2 true
|
||||
# else
|
||||
# define ADC_2 false
|
||||
# endif
|
||||
|
||||
# ifdef CONFIG_RPC2040_ADC_CHANNEL3
|
||||
# define ADC_3 true
|
||||
# else
|
||||
# define ADC_3 false
|
||||
# endif
|
||||
|
||||
# ifdef CONFIG_RPC2040_ADC_TEMPERATURE
|
||||
# define ADC_TEMP true
|
||||
# else
|
||||
# define ADC_TEMP false
|
||||
# endif
|
||||
|
||||
ret = rp2040_adc_setup("/dev/adc0", ADC_0, ADC_1, ADC_2, ADC_3, ADC_TEMP);
|
||||
if (ret != OK)
|
||||
{
|
||||
syslog(LOG_ERR, "Failed to initialize ADC Driver: %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
#endif /* defined(CONFIG_ADC) && defined(CONFIG_RP2040_ADC) */
|
||||
|
||||
/* Initialize board neo-pixel */
|
||||
|
||||
#if defined(CONFIG_RP2040_BOARD_HAS_WS2812) && defined(CONFIG_WS2812)
|
||||
|
||||
@@ -148,14 +148,14 @@ static int adc_open(FAR struct file *filep)
|
||||
/* Finally, Enable the ADC RX interrupt */
|
||||
|
||||
dev->ad_ops->ao_rxint(dev, true);
|
||||
|
||||
/* Save the new open count on success */
|
||||
|
||||
dev->ad_ocount = tmp;
|
||||
}
|
||||
|
||||
leave_critical_section(flags);
|
||||
}
|
||||
|
||||
/* Save the new open count on success */
|
||||
|
||||
dev->ad_ocount = tmp;
|
||||
}
|
||||
|
||||
nxsem_post(&dev->ad_closesem);
|
||||
|
||||
Reference in New Issue
Block a user