Michel2/Seeed_Arduino_CAN
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Add SPI begin transfer and end transfer

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The SPISettings object is used to configure the SPI port for your SPI device. All 3 parameters are combined to a single SPISettings object, which is given to SPI.beginTransaction().
Syntax
SPI_BEGIN()   --> SPI.beginTransaction(SPISettings(10000000, MSBFIRST, SPI_MODE0))

Stop using the SPI bus. Normally this is called after de-asserting the chip select, to allow other libraries to use the SPI bus.
Syntax
SPI_END()  --> SPI.endTransaction()
This commit is contained in:
Martin
2016-06-01 20:45:24 +02:00
parent 1a987571af
commit f5dcdfbae8
1 changed files with 15 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files
mcp_can.cpp
+15 -1
View File
@@ -20,6 +20,7 @@
Adlerweb
Btetz
Hurvajs
xboxpro1
The MIT License (MIT)
@@ -54,9 +55,11 @@
*********************************************************************************************************/
void MCP_CAN::mcp2515_reset(void)
{
SPI_BEGIN();
MCP2515_SELECT();
spi_readwrite(MCP_RESET);
MCP2515_UNSELECT();
SPI_END();
delay(10);
}
@@ -68,11 +71,13 @@ INT8U MCP_CAN::mcp2515_readRegister(const INT8U address)
{
INT8U ret;
SPI_BEGIN();
MCP2515_SELECT();
spi_readwrite(MCP_READ);
spi_readwrite(address);
ret = spi_read();
MCP2515_UNSELECT();
SPI_END();
return ret;
}
@@ -84,6 +89,7 @@ INT8U MCP_CAN::mcp2515_readRegister(const INT8U address)
void MCP_CAN::mcp2515_readRegisterS(const INT8U address, INT8U values[], const INT8U n)
{
INT8U i;
SPI_BEGIN();
MCP2515_SELECT();
spi_readwrite(MCP_READ);
spi_readwrite(address);
@@ -92,6 +98,7 @@ void MCP_CAN::mcp2515_readRegisterS(const INT8U address, INT8U values[], const I
values[i] = spi_read();
}
MCP2515_UNSELECT();
SPI_END();
}
/*********************************************************************************************************
@@ -100,11 +107,13 @@ void MCP_CAN::mcp2515_readRegisterS(const INT8U address, INT8U values[], const I
*********************************************************************************************************/
void MCP_CAN::mcp2515_setRegister(const INT8U address, const INT8U value)
{
SPI_BEGIN();
MCP2515_SELECT();
spi_readwrite(MCP_WRITE);
spi_readwrite(address);
spi_readwrite(value);
MCP2515_UNSELECT();
SPI_END();
}
/*********************************************************************************************************
@@ -114,6 +123,7 @@ void MCP_CAN::mcp2515_setRegister(const INT8U address, const INT8U value)
void MCP_CAN::mcp2515_setRegisterS(const INT8U address, const INT8U values[], const INT8U n)
{
INT8U i;
SPI_BEGIN();
MCP2515_SELECT();
spi_readwrite(MCP_WRITE);
spi_readwrite(address);
@@ -123,6 +133,7 @@ void MCP_CAN::mcp2515_setRegisterS(const INT8U address, const INT8U values[], co
spi_readwrite(values[i]);
}
MCP2515_UNSELECT();
SPI_END();
}
/*********************************************************************************************************
@@ -131,12 +142,14 @@ void MCP_CAN::mcp2515_setRegisterS(const INT8U address, const INT8U values[], co
*********************************************************************************************************/
void MCP_CAN::mcp2515_modifyRegister(const INT8U address, const INT8U mask, const INT8U data)
{
SPI_BEGIN();
MCP2515_SELECT();
spi_readwrite(MCP_BITMOD);
spi_readwrite(address);
spi_readwrite(mask);
spi_readwrite(data);
MCP2515_UNSELECT();
SPI_END();
}
/*********************************************************************************************************
@@ -146,10 +159,12 @@ void MCP_CAN::mcp2515_modifyRegister(const INT8U address, const INT8U mask, cons
INT8U MCP_CAN::mcp2515_readStatus(void)
{
INT8U i;
SPI_BEGIN();
MCP2515_SELECT();
spi_readwrite(MCP_READ_STATUS);
i = spi_read();
MCP2515_UNSELECT();
SPI_END();
return i;
}
@@ -582,7 +597,6 @@ INT8U MCP_CAN::begin(INT8U speedset)
{
INT8U res;
SPI.begin();
res = mcp2515_init(speedset);
if (res == MCP2515_OK) return CAN_OK;
else return CAN_FAILINIT;