mirror of
https://github.com/tinygo-org/drivers.git
synced 2026-07-26 10:38:41 +00:00
Anastasios Papalyras
f57b5ecee9
sharpmem: add implementation of sharpmem display driver * Implement Configure, Clear and ClearBuffer, add some tests, add documentation/comments * Reverse white * Inverted bits, fix and improve ClearBuffer, cleanup * Refine doc comment * Driver refactor, optimizations toggle, additional tests & support for all SKUs * Fix address overflow padding, add wire-level tests for assumed address encoding * Minor rename * Cleanup and doc fixes * Add device configs * Bounds check * Add example and smoketest entry * Use uf2 output file format * Refine example
31 lines
715 B
Go
31 lines
715 B
Go
package sharpmem
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// setBit sets the bit at pos in n to 1 and returns the updated number.
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func setBit(n uint8, pos uint8) uint8 {
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n |= 1 << pos
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return n
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}
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// unsetBit sets the bit at pos in n to 0 and returns the updated number.
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func unsetBit(n uint8, pos uint8) uint8 {
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n &^= 1 << pos
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return n
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}
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// hasBit returns whether the bit at pos in n is 1.
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func hasBit(n uint8, pos uint8) bool {
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n = n & (1 << pos)
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return n > 0
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}
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// bitfieldBufLen returns the required buffer size for keeping track of
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// changed lines.
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func bitfieldBufLen(bits int16) int16 {
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return 1 + (bits-1)/8
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}
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// ceilDiv divides a with b, but it uses the ceiling if modulo is not 0.
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func ceilDiv(a, b int16) int16 {
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return 1 + (a-1)/b
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}
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