FreeCalypso > hg > fc-tourmaline
view src/cs/services/fcbm/fcbm_textout.c @ 268:f2e52cab0a73
abb_inth.c: check all interrupt causes, not just one
The original code used if - else if - else if etc constructs, thus
the first detected interrupt was the only one handled. However,
Iota ITSTATREG is a clear-on-read register, thus if we only handle
the first detected interrupt and skip checking the others, then the
other interrupts will be lost, if more than one interrupt happened
to occur in one ABB interrupt handling cycle - a form of rare race
condition. Change the code to check all interrupts that were read
in this cycle.
| author | Mychaela Falconia <falcon@freecalypso.org> |
|---|---|
| date | Sun, 13 Jun 2021 18:17:53 +0000 |
| parents | 35474f3a1782 |
| children |
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/* * In this module we are going to implement functions for * displaying FCBM text strings on the LCD, abstracting * the messy Condat display driver for our purposes. */ #include "rv/rv_general.h" #include "fcbm/fcbm_func_i.h" #include "typedefs.h" #include "dspl.h" #ifdef LSCREEN #define FONT_HEIGHT 16 #define FAR_END_X 175 #else #define FONT_HEIGHT 8 #define FAR_END_X 95 #endif void fcbm_display_init(void) { dspl_Init(); dspl_set_char_type(DSPL_TYPE_ASCII); } void fcbm_display_line(UINT16 row, char *text) { dspl_Clear(0, row * FONT_HEIGHT, FAR_END_X, (row + 1) * FONT_HEIGHT - 1); dspl_ScrText(0, row * FONT_HEIGHT, text, TXT_STYLE_NORMAL); }