Steins7
c1b3f0d073
Bitfields can use byte acces, which the bus doesn't permit. When that happens, the bus adds extra bytes to form a word, modifying fields that shouldn't be. Bitfields can be kept for debug and read, but writes must be done though masks
16 lines
555 B
C
16 lines
555 B
C
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#define reg_def(pos, size) pos, (((0x1 << size) - 1) << pos)
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#define reg_set(reg, field) _reg_set(reg, field)
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#define _reg_set(reg, pos, mask) do { reg.word |= mask; } while (false)
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#define reg_reset(reg, field) _reg_reset(reg, field)
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#define _reg_reset(reg, pos, mask) do { reg.word &= ~mask; } while (false)
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#define reg_write(reg, field, value) _reg_write(reg, field, value)
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#define _reg_write(reg, pos, mask, value) \
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do { \
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reg.word |= value << pos; \
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} while (false) \
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