diff options
Diffstat (limited to 'openpicc/application/ssc_picc.c')
| -rw-r--r-- | openpicc/application/ssc_picc.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/openpicc/application/ssc_picc.c b/openpicc/application/ssc_picc.c index 4d21644..9818296 100644 --- a/openpicc/application/ssc_picc.c +++ b/openpicc/application/ssc_picc.c @@ -313,9 +313,8 @@ static int8_t ssc_rx_refill(void) #define ISO14443A_FDT_SHORT_1 1236 #define ISO14443A_FDT_SHORT_0 1172 -static void __ramfunc ssc_irq(void) +static void __ramfunc ssc_irq_inner(void) { - portSAVE_CONTEXT(); u_int32_t ssc_sr = ssc->SSC_SR; // int i, *tmp, emptyframe = 0; DEBUGP("ssc_sr=0x%08x, mode=%u: ", ssc_sr, ssc_state.mode); @@ -453,6 +452,12 @@ static void __ramfunc ssc_irq(void) #endif DEBUGPCR("I"); AT91F_AIC_ClearIt(AT91C_ID_SSC); +} + +static void __ramfunc ssc_irq_outer(void) __attribute__ ((naked)); +static void __ramfunc ssc_irq_outer(void) { + portSAVE_CONTEXT(); + ssc_irq_inner(); portRESTORE_CONTEXT(); } @@ -546,7 +551,7 @@ void ssc_rx_init(void) AT91F_AIC_ConfigureIt(AT91C_ID_SSC, OPENPICC_IRQ_PRIO_SSC, - AT91C_AIC_SRCTYPE_INT_HIGH_LEVEL, (THandler)&ssc_irq); + AT91C_AIC_SRCTYPE_INT_HIGH_LEVEL, (THandler)&ssc_irq_outer); /* don't divide clock inside SSC, we do that in tc_cdiv */ ssc->SSC_CMR = 0; |