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fc515f4572
HAL Port is using a special handle, where the module and pin are bit shifted straight into the handle. This is one of the few special cases we have, but for the way port is used it is much cleaner and uses much less memory. Plus it is generic and not specific to one type.
39 lines
1.4 KiB
C++
39 lines
1.4 KiB
C++
/*----------------------------------------------------------------------------*/
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/* Copyright (c) FIRST 2016. All Rights Reserved. */
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/* Open Source Software - may be modified and shared by FRC teams. The code */
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/* must be accompanied by the FIRST BSD license file in the root directory of */
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/* the project. */
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/*----------------------------------------------------------------------------*/
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#include "HandlesInternal.h"
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#include "IndexedHandleResource.h"
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#include "LimitedHandleResource.h"
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#include "UnlimitedHandleResource.h"
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namespace hal {
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HalPortHandle createPortHandle(uint8_t pin, uint8_t module) {
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// set last 8 bits, then shift to first 8 bits
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HalPortHandle handle = static_cast<HalPortHandle>(HalHandleEnum::Port);
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handle = handle << 24;
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// shift module and add to 3rd set of 8 bits
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int32_t temp = module;
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temp = (temp << 8) & 0xff00;
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handle += temp;
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// add pin to last 8 bits
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handle += pin;
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return handle;
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}
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HalHandle createHandle(int16_t index, HalHandleEnum handleType) {
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if (index < 0) return HAL_HANDLE_NEGATIVE_INDEX;
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uint8_t hType = static_cast<uint8_t>(handleType);
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if (hType == 0 || hType > 127) return HAL_HANDLE_INVALID_TYPE;
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// set last 8 bits, then shift to first 8 bits
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HalHandle handle = hType;
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handle = handle << 24;
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// add index to set last 16 bits
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handle += index;
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return handle;
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}
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}
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