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| uint | i2c_init (i2c_inst_t *i2c, uint baudrate) |
| | Initialise the I2C HW blockPut the I2C hardware into a known state, and enable it. Must be called before other functions. By default, the I2C is configured to operate as a master. More...
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| void | i2c_deinit (i2c_inst_t *i2c) |
| | Disable the I2C HW block. More...
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| uint | i2c_set_baudrate (i2c_inst_t *i2c, uint baudrate) |
| | Set I2C baudrateSet I2C bus frequency as close as possible to requested, and return actual rate set. Baudrate may not be as exactly requested due to clocking limitations. More...
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| void | i2c_set_slave_mode (i2c_inst_t *i2c, bool slave, uint8_t addr) |
| | Set I2C port to slave mode. More...
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| static uint | i2c_hw_index (i2c_inst_t *i2c) |
| | Convert I2C instance to hardware instance number. More...
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static i2c_hw_t * | i2c_get_hw (i2c_inst_t *i2c) |
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static i2c_inst_t * | i2c_get_instance (uint instance) |
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| int | i2c_write_blocking_until (i2c_inst_t *i2c, uint8_t addr, const uint8_t *src, size_t len, bool nostop, absolute_time_t until) |
| | Attempt to write specified number of bytes to address, blocking until the specified absolute time is reached. More...
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| int | i2c_read_blocking_until (i2c_inst_t *i2c, uint8_t addr, uint8_t *dst, size_t len, bool nostop, absolute_time_t until) |
| | Attempt to read specified number of bytes from address, blocking until the specified absolute time is reached. More...
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| static int | i2c_write_timeout_us (i2c_inst_t *i2c, uint8_t addr, const uint8_t *src, size_t len, bool nostop, uint timeout_us) |
| | Attempt to write specified number of bytes to address, with timeout. More...
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int | i2c_write_timeout_per_char_us (i2c_inst_t *i2c, uint8_t addr, const uint8_t *src, size_t len, bool nostop, uint timeout_per_char_us) |
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| static int | i2c_read_timeout_us (i2c_inst_t *i2c, uint8_t addr, uint8_t *dst, size_t len, bool nostop, uint timeout_us) |
| | Attempt to read specified number of bytes from address, with timeout. More...
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int | i2c_read_timeout_per_char_us (i2c_inst_t *i2c, uint8_t addr, uint8_t *dst, size_t len, bool nostop, uint timeout_per_char_us) |
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| int | i2c_write_blocking (i2c_inst_t *i2c, uint8_t addr, const uint8_t *src, size_t len, bool nostop) |
| | Attempt to write specified number of bytes to address, blocking. More...
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| int | i2c_read_blocking (i2c_inst_t *i2c, uint8_t addr, uint8_t *dst, size_t len, bool nostop) |
| | Attempt to read specified number of bytes from address, blocking. More...
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| static size_t | i2c_get_write_available (i2c_inst_t *i2c) |
| | Determine non-blocking write space available. More...
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| static size_t | i2c_get_read_available (i2c_inst_t *i2c) |
| | Determine number of bytes received. More...
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| static void | i2c_write_raw_blocking (i2c_inst_t *i2c, const uint8_t *src, size_t len) |
| | Write direct to TX FIFO. More...
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| static void | i2c_read_raw_blocking (i2c_inst_t *i2c, uint8_t *dst, size_t len) |
| | Read direct from RX FIFO. More...
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| static uint8_t | i2c_read_byte_raw (i2c_inst_t *i2c) |
| | Pop a byte from I2C Rx FIFO.This function is non-blocking and assumes the Rx FIFO isn't empty. More...
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| static void | i2c_write_byte_raw (i2c_inst_t *i2c, uint8_t value) |
| | Push a byte into I2C Tx FIFO.This function is non-blocking and assumes the Tx FIFO isn't full. More...
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| static uint | i2c_get_dreq (i2c_inst_t *i2c, bool is_tx) |
| | Return the DREQ to use for pacing transfers to/from a particular I2C instance. More...
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#define | i2c0 (&i2c0_inst) |
| | Identifier for I2C HW Block 0.
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#define | i2c1 (&i2c1_inst) |
| | Identifier for I2C HW Block 1.
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| i2c_inst_t | i2c0_inst |
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i2c_inst_t | i2c1_inst |
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v1.5.0
