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Owen L - SFE
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add lis2dh12 driver for Edge variant
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‎variants/edge/include/lis2dh12/lis2dh12_platform_apollo3.c

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/*
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Copyright (c) 2019 SparkFun Electronics
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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*/
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#include "lis2dh12_platform_apollo3.h"
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/*
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* @brief Write generic device register (platform dependent)
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*
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* @param handle customizable argument. In this examples is used in
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* order to select the correct sensor bus handler.
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* @param reg register to write
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* @param bufp pointer to data to write in register reg
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* @param len number of consecutive register to write
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*
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*/
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int32_t lis2dh12_write_platform_apollo3(void *handle, uint8_t reg, uint8_t *bufp, uint16_t len)
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{
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uint32_t retVal32 = 0;
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lis2dh12_platform_apollo3_if_t* pif = (lis2dh12_platform_apollo3_if_t*)handle;
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am_hal_iom_transfer_t iomTransfer = {0};
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if( bufp == NULL ) { return AM_HAL_STATUS_FAIL; }
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if( pif == NULL ) { return AM_HAL_STATUS_FAIL; }
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if( pif->iomHandle == NULL) { return AM_HAL_STATUS_FAIL; }
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// Set up transfer
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iomTransfer.uPeerInfo.ui32I2CDevAddr = pif->addCS;
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iomTransfer.ui32InstrLen = 1;
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iomTransfer.ui32Instr = (reg | 0x80);
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iomTransfer.ui32NumBytes = len;
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iomTransfer.eDirection = AM_HAL_IOM_TX;
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iomTransfer.pui32TxBuffer = (uint32_t*)bufp;
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iomTransfer.pui32RxBuffer = NULL;
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iomTransfer.bContinue = false;
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if( pif->useSPI ){
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// ToDo: Support SPI w/ CS assertion
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}
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// Send the transfer
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retVal32 = am_hal_iom_blocking_transfer(pif->iomHandle, &iomTransfer);
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if( pif->useSPI ){
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// ToDo: Support SPI / CS de-assertion
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}
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if( retVal32 != AM_HAL_STATUS_SUCCESS ){ return retVal32; }
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return 0;
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}
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/*
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* @brief Read generic device register (platform dependent)
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*
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* @param handle customizable argument. In this examples is used in
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* order to select the correct sensor bus handler.
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* @param reg register to read
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* @param bufp pointer to buffer that store the data read
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* @param len number of consecutive register to read
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*
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*/
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int32_t lis2dh12_read_platform_apollo3(void *handle, uint8_t reg, uint8_t *bufp, uint16_t len)
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{
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uint32_t retVal32 = 0;
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lis2dh12_platform_apollo3_if_t* pif = (lis2dh12_platform_apollo3_if_t*)handle;
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am_hal_iom_transfer_t iomTransfer = {0};
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if( bufp == NULL ) { return AM_HAL_STATUS_FAIL; }
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if( pif == NULL ) { return AM_HAL_STATUS_FAIL; }
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if( pif->iomHandle == NULL) { return AM_HAL_STATUS_FAIL; }
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// Set up first transfer
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iomTransfer.uPeerInfo.ui32I2CDevAddr = pif->addCS;
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iomTransfer.ui32InstrLen = 1;
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iomTransfer.ui32Instr = (reg | 0x80);
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iomTransfer.ui32NumBytes = 0;
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iomTransfer.eDirection = AM_HAL_IOM_TX;
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iomTransfer.bContinue = true;
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if( pif->useSPI ){
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// ToDo: Support SPI w/ CS assertion
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}
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// Send the first transfer
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retVal32 = am_hal_iom_blocking_transfer(pif->iomHandle, &iomTransfer);
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if( retVal32 != AM_HAL_STATUS_SUCCESS ){ return retVal32; }
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// Change direction, and add the rx buffer
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iomTransfer.eDirection = AM_HAL_IOM_RX;
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iomTransfer.pui32RxBuffer = (uint32_t*)bufp;
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iomTransfer.ui32NumBytes = len;
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iomTransfer.bContinue = false;
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// Send the second transfer
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retVal32 = am_hal_iom_blocking_transfer(pif->iomHandle, &iomTransfer);
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if( retVal32 != AM_HAL_STATUS_SUCCESS ){ return retVal32; }
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return 0;
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}

‎variants/edge/include/lis2dh12/lis2dh12_platform_apollo3.h

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/*
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Copyright (c) 2019 SparkFun Electronics
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Permission is hereby granted, free of charge, to any person obtaining a copy
5+
of this software and associated documentation files (the "Software"), to deal
6+
in the Software without restriction, including without limitation the rights
7+
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8+
copies of the Software, and to permit persons to whom the Software is
9+
furnished to do so, subject to the following conditions:
10+
11+
The above copyright notice and this permission notice shall be included in all
12+
copies or substantial portions of the Software.
13+
14+
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15+
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16+
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17+
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18+
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19+
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20+
SOFTWARE.
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*/
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#ifndef _LIS2DH12_PLATFORM_APOLLO3_H_
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#define _LIS2DH12_PLATFORM_APOLLO3_H_
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#include "am_mcu_apollo.h"
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#include "lis2dh12_reg.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct _lis2dh12_platform_apollo3_if_t {
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void* iomHandle; // IO Master instance
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uint8_t addCS; // I2C mode: the 7-bit I2C address (either 0x18 or 0x19 depeding on SA0 pin)
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// SPI mode: the Apollo3 pad to use for chip select
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bool useSPI; // Set 'true' if using SPI mode, else 'false'
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}lis2dh12_platform_apollo3_if_t;
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int32_t lis2dh12_write_platform_apollo3(void *handle, uint8_t reg, uint8_t *bufp, uint16_t len);
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int32_t lis2dh12_read_platform_apollo3(void *handle, uint8_t reg, uint8_t *bufp, uint16_t len);
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#ifdef __cplusplus
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}
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#endif
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#endif // _LIS2DH12_PLATFORM_APOLLO3_H_

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