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Fix typo in ulp_instruction_set.rst. Merges https://github.com/espressif/esp-idf/pull/1540

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Markus Witt 2018-01-24 06:35:22 +01:00 committed by krzychb
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docs/api-guides/ulp_instruction_set.rst
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@ -857,7 +857,7 @@ Convenience macros for peripheral registers access
ULP source files are passed through C preprocessor before the assembler. This allows certain macros to be used to facilitate access to peripheral registers.
Some existing macros are defined in ``soc/soc_ulp.h`` header file. These macros allow access to the fields of peripheral registers by their names.
Peripheral registers names which can be used with these macros are the ones defined in ``soc/rtc_cntl_reg.h``, ``soc/rtc_io_reg.h``, ``soc/sens_reg.h``, and ``soc_rtc_i2c_reg.h``.
Peripheral registers names which can be used with these macros are the ones defined in ``soc/rtc_cntl_reg.h``, ``soc/rtc_io_reg.h``, ``soc/sens_reg.h``, and ``soc/rtc_i2c_reg.h``.
READ_RTC_REG(rtc_reg, low_bit, bit_width)
Read up to 16 bits from rtc_reg[low_bit + bit_width - 1 : low_bit] into R0. For example::