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This commit is contained in:
lilian 2016-11-26 15:14:40 +01:00
parent f19fdc37be
commit 20ab2176fb
3 changed files with 65 additions and 65 deletions
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46
core/include/esp/spi.h
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@ -186,7 +186,7 @@ void spi_set_frequency_div(uint8_t bus, uint32_t divider);
inline uint32_t spi_get_frequency_div(uint8_t bus)
{
return (FIELD2VAL(SPI_CLOCK_DIV_PRE, SPI(bus).CLOCK) + 1) |
(FIELD2VAL(SPI_CLOCK_COUNT_NUM, SPI(bus).CLOCK) + 1);
(FIELD2VAL(SPI_CLOCK_COUNT_NUM, SPI(bus).CLOCK) + 1);
}
/**
* \brief Get SPI bus frequency in Hz
@ -196,8 +196,8 @@ inline uint32_t spi_get_frequency_div(uint8_t bus)
inline uint32_t spi_get_frequency_hz(uint8_t bus)
{
return APB_CLK_FREQ /
(FIELD2VAL(SPI_CLOCK_DIV_PRE, SPI(bus).CLOCK) + 1) /
(FIELD2VAL(SPI_CLOCK_COUNT_NUM, SPI(bus).CLOCK) + 1);
(FIELD2VAL(SPI_CLOCK_DIV_PRE, SPI(bus).CLOCK) + 1) /
(FIELD2VAL(SPI_CLOCK_COUNT_NUM, SPI(bus).CLOCK) + 1);
}
/**
@ -230,8 +230,8 @@ void spi_set_endianness(uint8_t bus, spi_endianness_t endianness);
inline spi_endianness_t spi_get_endianness(uint8_t bus)
{
return SPI(bus).USER0 & (SPI_USER0_WR_BYTE_ORDER | SPI_USER0_RD_BYTE_ORDER)
? SPI_BIG_ENDIAN
: SPI_LITTLE_ENDIAN;
? SPI_BIG_ENDIAN
: SPI_LITTLE_ENDIAN;
}
/**
@ -291,12 +291,12 @@ size_t spi_transfer(uint8_t bus, const void *out_data, void *in_data, size_t len
*/
static inline void spi_set_command(uint8_t bus,uint8_t bits, uint16_t data)
{
if(!bits) return ;
SPI(bus).USER0 |= SPI_USER0_COMMAND ; //enable COMMAND function in SPI module
uint16_t command = data << (16-bits); //align command data to high bits
command = ((command>>8)&0xff) | ((command<<8)&0xff00); //swap byte order
SPI(bus).USER2 = SET_FIELD(SPI(bus).USER2, SPI_USER2_COMMAND_BITLEN, --bits);
SPI(bus).USER2 = SET_FIELD(SPI(bus).USER2, SPI_USER2_COMMAND_VALUE, command);
if(!bits) return ;
SPI(bus).USER0 |= SPI_USER0_COMMAND ; //enable COMMAND function in SPI module
uint16_t command = data << (16-bits); //align command data to high bits
command = ((command>>8)&0xff) | ((command<<8)&0xff00); //swap byte order
SPI(bus).USER2 = SET_FIELD(SPI(bus).USER2, SPI_USER2_COMMAND_BITLEN, --bits);
SPI(bus).USER2 = SET_FIELD(SPI(bus).USER2, SPI_USER2_COMMAND_VALUE, command);
}
/**
@ -316,10 +316,10 @@ static inline void spi_set_command(uint8_t bus,uint8_t bits, uint16_t data)
*/
static inline void spi_set_address(uint8_t bus,uint8_t bits, uint32_t data)
{
if(!bits) return ;
SPI(bus).USER1 = SET_FIELD(SPI(bus).USER1, SPI_USER1_ADDR_BITLEN, --bits);
SPI(bus).USER0 |= SPI_USER0_ADDR ; //enable ADDRess function in SPI module
SPI(bus).ADDR = data<<(32-bits) ; //align address data to high bits
if(!bits) return ;
SPI(bus).USER1 = SET_FIELD(SPI(bus).USER1, SPI_USER1_ADDR_BITLEN, --bits);
SPI(bus).USER0 |= SPI_USER0_ADDR ; //enable ADDRess function in SPI module
SPI(bus).ADDR = data<<(32-bits) ; //align address data to high bits
}
/**
@ -335,14 +335,14 @@ static inline void spi_set_address(uint8_t bus,uint8_t bits, uint32_t data)
*
* \param bus Bus ID: 0 - system, 1 - user
* \param bits Number of bits
* \param pos Address to send for each transfert.
* \param pos Position of dummy bit, between Dout and Din if true.
*/
static inline void spi_set_dummy_bits(uint8_t bus, uint8_t bits, bool pos)
{
if(!bits) return ;
if(pos) { SPI(bus).USER0 |= SPI_USER0_MISO; } // Dummy bit will be between Dout and Din data if set
SPI(bus).USER0 |= SPI_USER0_DUMMY; //enable dummy bits
SPI(bus).USER1 = SET_FIELD(SPI(bus).USER1, SPI_USER1_DUMMY_CYCLELEN, --bits);
if(!bits) return ;
if(pos) { SPI(bus).USER0 |= SPI_USER0_MISO; } // Dummy bit will be between Dout and Din data if set
SPI(bus).USER0 |= SPI_USER0_DUMMY; //enable dummy bits
SPI(bus).USER1 = SET_FIELD(SPI(bus).USER1, SPI_USER1_DUMMY_CYCLELEN, --bits);
}
/**
@ -351,7 +351,7 @@ static inline void spi_set_dummy_bits(uint8_t bus, uint8_t bits, bool pos)
*/
static inline void spi_clear_address(uint8_t bus)
{
SPI(bus).USER0 &= ~(SPI_USER0_ADDR) ;
SPI(bus).USER0 &= ~(SPI_USER0_ADDR) ;
}
/**
@ -361,7 +361,7 @@ static inline void spi_clear_address(uint8_t bus)
static inline void spi_clear_command(uint8_t bus)
{
SPI(bus).USER0 &= ~(SPI_USER0_COMMAND) ;
SPI(bus).USER0 &= ~(SPI_USER0_COMMAND) ;
}
/**
@ -370,7 +370,7 @@ static inline void spi_clear_command(uint8_t bus)
*/
static inline void spi_clear_dummy(uint8_t bus)
{
SPI(bus).USER0 &= ~(SPI_USER0_DUMMY | SPI_USER0_MISO ) ;
SPI(bus).USER0 &= ~(SPI_USER0_DUMMY | SPI_USER0_MISO);
}
/**