catarrh/simtrace2
1
0
Fork 0
mirror of https://gitea.osmocom.org/sim-card/simtrace2.git synced 2026-03-17 05:38:33 +03:00
Code Issues Packages Projects Releases Wiki Activity

Remove check for PIO_ISR interrue

Browse Source 
At first I thought I had to check the interrupt source when my interrupt
handler was called. But then, the smart card insertion pin was never
marked as the interrupt source in the PIO_ISR.

It turns out, the ISR register is cleared on read, which is done by the
atmel lib function PioInterruptHandler.
This commit is contained in:
Christina Quast
2015-11-05 10:57:50 +01:00
parent 89690c98dd
commit 442dc27bc9
1 changed files with 15 additions and 26 deletions
Download Patch File Download Diff File Expand all files Collapse all files

41
firmware/src_simtrace/ccid.c
View File

@@ -2,6 +2,7 @@
* ATMEL Microcontroller Software Support
* ----------------------------------------------------------------------------
* Copyright (c) 2009, Atmel Corporation
* Copyright (c) 2014, Christina Quast
*
* All rights reserved.
*
@@ -74,33 +75,21 @@ static const Pin pinSmartCard = SMARTCARD_CONNECT_PIN;
*/
static void ISR_PioSmartCard( const Pin *pPin )
{
/* FIXME: why is pinSmartCard.pio->PIO_ISR the wrong number?
printf("+++++ Trying to check for pending interrupts (PIO ISR: 0x%X)\n\r", pinSmartCard.pio->PIO_ISR);
printf("+++++ Mask: 0x%X\n\r", pinSmartCard.mask);
Output:
+++++ Trying to check for pending interrupts (PIO ISR: 0x400)) = 1<<10
+++++ Mask: 0x100 = 1<<8
*/
// PA10 is DTXD, which is the debug uart transmit pin
printf("Interrupt!!\n\r");
/* Check all pending interrupts */
// FIXME: this if condition is not always true...
// if ( (pinSmartCard.pio->PIO_ISR & pinSmartCard.mask) != 0 )
/* Check current level on pin */
/* The interrupt is already erased on read from the PIO_ISR (PIO Interrupt
* Status Register) by the calling higher level interrupt handler
*/
if ( PIO_Get( &pinSmartCard ) == 0 )
{
/* Check current level on pin */
if ( PIO_Get( &pinSmartCard ) == 0 )
{
sim_inserted = 1;
printf( "-I- Smartcard inserted\n\r" ) ;
CCID_Insertion();
}
else
{
sim_inserted = 0;
printf( "-I- Smartcard removed\n\r" ) ;
CCID_Removal();
}
sim_inserted = 1;
printf( "-I- Smartcard inserted\n\r" ) ;
CCID_Insertion();
}
else
{
sim_inserted = 0;
printf( "-I- Smartcard removed\n\r" ) ;
CCID_Removal();
}
}