AS5047U_TestConfig::SPIParams Struct Reference

SPI Communication Parameters. More...

#include <esp32_as5047u_test_config.hpp>

Static Public Attributes
static constexpr uint32_t	FREQUENCY = 1000000
	4MHz SPI frequency (conservative default)
static constexpr uint8_t	MODE = 1
	SPI Mode 1 (CPOL=0, CPHA=1)
static constexpr uint8_t	QUEUE_SIZE = 1
	Transaction queue size.
static constexpr uint8_t	CS_ENA_PRETRANS = 1
	CS asserted N clock cycles before transaction.
static constexpr uint8_t	CS_ENA_POSTTRANS = 1
static constexpr uint8_t	SPI_HOST_ID = 2
	SPI host: 2 = SPI2_HOST, 3 = SPI3_HOST. Try 3 if SCLK does not toggle on your board.

Detailed Description

SPI Communication Parameters.

The AS5047U supports SPI frequencies up to 10MHz.

SPI Mode: CPOL=0, CPHA=1 (Mode 1) Data format: 16-bit frames (default) or 24-bit frames (SPI_24 mode)

AS5047U SPI timing (per datasheet):

• Maximum SPI clock: 10 MHz
• CS setup time (tCSS): 350ns min before first SCLK edge
• CS hold time (tCSH): 50ns min after last SCLK edge
• CS high time between frames (tCSmin): 350ns min

cs_ena_pretrans and cs_ena_posttrans are in clock cycles. At 4MHz: 1 cycle = 250ns, so 2 cycles = 500ns (above 350ns minimum)

Member Data Documentation

CS_ENA_POSTTRANS

constexpr uint8_t AS5047U_TestConfig::SPIParams::CS_ENA_POSTTRANS = 1

staticconstexpr

CS held N clock cycles after transaction

CS_ENA_PRETRANS

constexpr uint8_t AS5047U_TestConfig::SPIParams::CS_ENA_PRETRANS = 1

staticconstexpr

CS asserted N clock cycles before transaction.

FREQUENCY

constexpr uint32_t AS5047U_TestConfig::SPIParams::FREQUENCY = 1000000

staticconstexpr

4MHz SPI frequency (conservative default)

MODE

constexpr uint8_t AS5047U_TestConfig::SPIParams::MODE = 1

staticconstexpr

SPI Mode 1 (CPOL=0, CPHA=1)

QUEUE_SIZE

constexpr uint8_t AS5047U_TestConfig::SPIParams::QUEUE_SIZE = 1

staticconstexpr

Transaction queue size.

SPI_HOST_ID

constexpr uint8_t AS5047U_TestConfig::SPIParams::SPI_HOST_ID = 2

staticconstexpr

SPI host: 2 = SPI2_HOST, 3 = SPI3_HOST. Try 3 if SCLK does not toggle on your board.

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The documentation for this struct was generated from the following file:

• examples/esp32/main/esp32_as5047u_test_config.hpp