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ulp: Correct misleading i2c write mask comments 

Merges https://github.com/espressif/esp-idf/pull/3580
pull/3947/head
boarchuz 2019-06-13 18:20:31 +10:00 zatwierdzone przez Ivan Grokhotkov
rodzic 88a69823cf
commit 68b3677daa
1 zmienionych plików z 3 dodań i 3 usunięć
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6
components/ulp/include/esp32/ulp.h
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@ -263,8 +263,8 @@ typedef union {
struct {
uint32_t i2c_addr : 8; /*!< I2C slave address */
uint32_t data : 8; /*!< 8 bits of data for write operation */
uint32_t low_bits : 3; /*!< number of low bits to mask for write operation */
uint32_t high_bits : 3; /*!< number of high bits to mask for write operation */
uint32_t low_bits : 3; /*!< low bit of range for write operation (lower bits are masked) */
uint32_t high_bits : 3; /*!< high bit of range for write operation (higher bits are masked) */
uint32_t i2c_sel : 4; /*!< index of slave address register [7:0] */
uint32_t unused : 1; /*!< Unused */
uint32_t rw : 1; /*!< Write (1) or read (0) */
@ -1016,7 +1016,7 @@ static inline uint32_t SOC_REG_TO_ULP_PERIPH_SEL(uint32_t reg) {
*
* Slave address (in 7-bit format) has to be set in advance into SENS_I2C_SLAVE_ADDRx register field, where x == slave_sel.
* For read operations, 8 bits of read result is stored into R0 register.
* For write operations, bits outside range [high_bit:low_bit] of val are masked.
* For write operations, bits outside of val[high_bit:low_bit] are masked.
*/
#define I_I2C_RW(sub_addr, val, low_bit, high_bit, slave_sel, rw_bit) { .i2c = {\
.i2c_addr = sub_addr, \