Jeff Wang
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9fc462ca94
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bugfix for backspacing from exp entry all the back to significand entry
check for '.' needs to be after entry_i--
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2019-10-02 22:47:32 -04:00 |
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Jeff Wang
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0049f3df98
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do not compile with stack auto, change functions to be nonreentrant, use fixed parameters
- frees up ~4KB of code space
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2019-05-02 03:27:01 -04:00 |
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Jeff Wang
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6399cbf44f
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modify code to use accumulator architecture to minimize pointer usage
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2019-05-01 03:54:57 -04:00 |
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Jeff Wang
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836d4fc122
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fix emulator lcd/calculator thread startup race
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2019-04-05 02:10:10 -04:00 |
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Jeff Wang
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ee917a71e5
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add version string at poweron, also check for poweroff keys in interrupt
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2019-04-05 00:47:07 -04:00 |
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Jeff Wang
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240dd570ae
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fix for LCD row tracking, fix for "phantom" keypress at powerup
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2019-04-04 03:01:33 -04:00 |
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Jeff Wang
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5e04a18cd2
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use semaphores for keyboard and lcd, add lcd thread for calling updateLcd()
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2019-04-04 01:54:02 -04:00 |
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Jeff Wang
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89c5f0dc6c
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only process calculator keys and update lcd if keys pressed
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2019-04-04 00:33:46 -04:00 |
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Jeff Wang
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fc6d8efc5f
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work on Qt GUI, still not working properly
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2019-04-04 00:33:42 -04:00 |
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Jeff Wang
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1be980d85b
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fix reciprocol convergence
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2019-04-02 23:57:28 -04:00 |
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Jeff Wang
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bb102add67
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add exponent character
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2019-04-01 02:38:17 -04:00 |
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Jeff Wang
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f5d8d601a2
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bugfix for keys
- initialize count, so that there is no initial keypress at powerup
- use int8_t instead of uint32_t to pass new key, since only 1 new key
used
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2019-04-01 01:55:47 -04:00 |
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Jeff Wang
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8aec2ae134
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fix exponent display
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2019-04-01 01:12:02 -04:00 |
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Jeff Wang
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fa0afa726b
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update readme
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2019-03-31 23:34:13 -04:00 |
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Jeff Wang
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12e7f010e6
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bugfix: latch on immediately, to ensure calculator stays on after poweron
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2019-03-31 19:37:55 -04:00 |
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Jeff Wang
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d1ec11cad8
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allow correct building/syntax highlighting on desktop
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2019-03-31 19:37:55 -04:00 |
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Jeff Wang
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43edb291cf
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attempt to reduce space usage
- remove unecessary code
- ifdef "extra" code
- pass data through globals instead of functions accessing static data
- functions non-reentrant, locate tmps in xdata
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2019-03-31 19:37:52 -04:00 |
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Jeff Wang
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ecb0492534
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initial calculator code
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2019-03-31 19:33:59 -04:00 |
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Jeff Wang
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bdecc32b86
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use global Buf everywhere for debugging
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2019-03-28 00:41:54 -04:00 |
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Jeff Wang
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7dddcb0902
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soft latching power switch
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2019-03-21 21:06:12 -04:00 |
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Jeff Wang
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606ac5c2f8
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optimize delays for better accuracy
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2019-03-21 21:06:12 -04:00 |
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Jeff Wang
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b3f0f12c32
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key debouncer
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2019-03-21 21:06:12 -04:00 |
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Jeff Wang
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84b6888d7e
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scan keyboard
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2019-03-20 03:21:11 -04:00 |
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Jeff Wang
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f4f70853c1
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initial stc rpn calculator project
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2019-03-20 00:34:51 -04:00 |
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