91 lines
2.3 KiB
C
91 lines
2.3 KiB
C
// Copyright 2021 IOsetting <iosetting(at)outlook.com>
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// 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,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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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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#include "adxl345.h"
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uint8_t xbuf[3];
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uint8_t ADXL345_ReadByte(uint8_t addr)
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{
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ADXL345_CS = 0;
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xbuf[0] = addr | 0x80;
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xbuf[1] = 0xFF;
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SPI_TxRxBytes(xbuf, 2);
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ADXL345_CS = 1;
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return xbuf[1];
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}
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uint16_t ADXL345_ReadInt(uint8_t addr)
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{
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ADXL345_CS = 0;
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xbuf[0] = addr | 0xC0;
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xbuf[1] = 0xFF;
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xbuf[2] = 0xFF;
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SPI_TxRxBytes(xbuf, 3);
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ADXL345_CS = 1;
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return *((uint16_t *)&xbuf[1]);
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}
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void ADXL345_WriteByte(uint8_t addr, uint8_t dat)
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{
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ADXL345_CS = 0;
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xbuf[0] = addr;
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xbuf[1] = dat;
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SPI_TxRxBytes(xbuf, 2);
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ADXL345_CS = 1;
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}
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HAL_StatusTypeDef ADXL345_Init(
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ADXL345_DataRate_t dataRate,
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ADXL345_SPI_Wire_t spiWire,
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ADXL345_IntActive_t intLevel,
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ADXL345_DataResolve_t resolve,
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ADXL345_DataAlignment_t alignment,
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ADXL345_G_Range_t range)
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{
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if (ADXL345_ReadByte(ADXL345_REG_DEVID) == ADXL345_DEVICE_ID)
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{
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ADXL345_WriteByte(ADXL345_REG_BW_RATE, dataRate);
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ADXL345_WriteByte(ADXL345_REG_DATA_FORMAT,
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spiWire|intLevel|resolve|alignment|range);
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ADXL345_WriteByte(ADXL345_REG_POWER_CTL, 0x08); // BIT3=0/1:(测量模式/待机模式)；BIT2=0/1:(工作/休眠)；
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return HAL_OK;
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}
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else
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{
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return HAL_ERROR;
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}
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}
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void ADXL345_SetInterrupts(uint8_t interrupts)
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{
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ADXL345_WriteByte(ADXL345_REG_INT_ENABLE, interrupts);
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}
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void ADXL345_RemapInterrupts(uint8_t interrupts)
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{
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ADXL345_WriteByte(ADXL345_REG_INT_MAP, interrupts);
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}
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uint8_t ADXL345_IsInterrupt(uint8_t interrupt)
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{
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uint8_t int_src = ADXL345_ReadByte(ADXL345_REG_INT_SOURCE);
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return (int_src & interrupt);
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}
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void ADXL345_EnableTapDetectOnAxes(uint8_t axes)
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{
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ADXL345_WriteByte(ADXL345_REG_TAP_AXES, axes);
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} |