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I_WR_REG macro
Write literal value to a peripheral register reg[high_bit : low_bit] = val This instruction can access RTC_CNTL_, RTC_IO_, SENS_, and RTC_I2C peripheral registers.
Syntax
#define I_WR_REG(reg, low_bit, high_bit, val) {.wr_reg = {\
.addr = ((reg) / sizeof(uint32_t)) & 0xff, \
.periph_sel = SOC_REG_TO_ULP_PERIPH_SEL(reg), \
.data = val, \
.low = low_bit, \
.high = high_bit, \
.opcode = OPCODE_WR_REG } }