Seed can implementation
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Diff: seeed_can_spi.h
- Revision:
- 0:f5d099885d3d
- Child:
- 1:ad71faa09868
diff -r 000000000000 -r f5d099885d3d seeed_can_spi.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/seeed_can_spi.h Tue Nov 05 22:37:35 2013 +0000 @@ -0,0 +1,76 @@ +/* seeed_can_spi.h + * Copyright (c) 2013 Sophie Dexter + * + * 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 _SEEED_CAN_SPI_H_ +#define _SEEED_CAN_SPI_H_ + +#include "seeed_can_defs.h" + +#ifdef __cplusplus +extern "C" { +#endif + + /** CAN driver typedefs + */ + struct Seeed_MCP_CAN_Shield { + SPI spi; + DigitalOut ncs; + InterruptIn irq; + Seeed_MCP_CAN_Shield(SPI _spi_, DigitalOut _ncs_, InterruptIn _irq_) : + spi(_spi_), + ncs(_ncs_), + irq(_irq_) + {} + }; + typedef struct Seeed_MCP_CAN_Shield can_t; + + /** mcp2515 spi instructions + */ + void mcpReset(can_t *obj); // reset the MCP2515 CAN controller chip + + uint8_t mcpRead(can_t *obj, // read from a single MCP2512 register + const uint8_t address); + void mcpReadMultiple(can_t *obj, // read multiple, sequential, registers into an array + const uint8_t address, + uint8_t values[], + const uint8_t n); + void mcpReadBuffer(can_t *obj, // read the specified receive buffer into an array + const uint8_t command, + uint8_t values[], + const uint8_t n); + void mcpWrite(can_t *obj, // write to a single MCP2512 register + const uint8_t address, + const uint8_t value); + void mcpWriteMultiple(can_t *obj, // write an array into consecutive MCP2515 registers + const uint8_t address, + const uint8_t values[], + const uint8_t n); + void mcpWriteBuffer(can_t *obj, // write an array into the specified transmit buffer + const uint8_t command, + uint8_t values[], + const uint8_t n); + void mcpBufferRTS(can_t *obj, const uint8_t command); // initiate transmission of the specified MCP2515 transmit buffer + uint8_t mcpStatus(can_t *obj); // read the MCP2515's status register + uint8_t mcpReceiveStatus(can_t *obj); // read mcp2515's receive status register + void mcpBitModify(can_t *obj, // modify bits of a register specified by a mask + const uint8_t address, + const uint8_t mask, + const uint8_t data); + +#ifdef __cplusplus +}; +#endif + +#endif // SEEED_CAN_SPI_H \ No newline at end of file