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view src/cs/drivers/drv_app/r2d/r2d_onoff.c @ 268:f2e52cab0a73

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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 6541e43f88e5
children 0196b6bf633c
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/*
 * This FreeCalypso-added R2D module implements on/off control
 * for BLRR (backlight required for readability) displays.
 */

#include "rv/rv_general.h"
#include "r2d/r2d_config.h"
#include "r2d/r2d_messages.h"
#include "r2d/r2d_blrr_api.h"

#ifdef CONFIG_TARGET_LUNA
  #include "r2d/lcds/luna/r2d_onoff_i.c"
#elif defined(CONFIG_TARGET_C139)
  #include "r2d/lcds/c139/r2d_onoff_i.c"
#else
  #error "R2D on/off module selection: unsupported target"
#endif

void r2d_process_onoff_message(T_R2D_EVT *msg)
{
	r2d_onoff_action(msg->status);
}