Mouse code for the MacroRat
Diff: mbed-dev/targets/TARGET_Atmel/TARGET_SAM_CortexM0P/sercom_dma.h
- Revision:
- 18:6a4db94011d3
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-dev/targets/TARGET_Atmel/TARGET_SAM_CortexM0P/sercom_dma.h Sun May 14 23:18:57 2017 +0000 @@ -0,0 +1,62 @@ +/* mbed Microcontroller Library + * Copyright (c) 2006-2015 ARM Limited + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef _SERCOM_DMA_H +#define _SERCOM_DMA_H + +#ifdef __cplusplus +extern "C" { +#endif + +#include <compiler.h> +#include "dma.h" + + +struct sercom_dma { + uint8_t tx_channel_id; + uint8_t rx_channel_id; + enum dma_status_flags tx_status; + enum dma_status_flags rx_status; +}; + +/** Allocate a channel for TX + * + * @param[in] sercom_index index of sercom instance + * @param[out] tx_id pointer to channel id + * @return allocated channel id + */ +uint8_t sercom_setup_tx_channel(uint8_t sercom_index, uint8_t *tx_id); + +/** Allocate a channel for RX + * + * @param[in] sercom_index index of sercom instance + * @param[out] rx_id pointer to channel id + * @return allocated channel id + */ +uint8_t sercom_setup_rx_channel(uint8_t sercom_index, uint8_t *rx_id); + +/** Release DMA channels if allocated + * + * @param[in] sercom_index index of sercom instance + * @return void + */ +void sercom_release_channel(uint8_t sercom_index); + +#ifdef __cplusplus +} +#endif + +#endif /* _SERCOM_DMA_H */