diff options
| author | henryk <henryk@6dc7ffe9-61d6-0310-9af1-9938baff3ed1> | 2007-11-14 05:28:05 +0000 |
|---|---|---|
| committer | henryk <henryk@6dc7ffe9-61d6-0310-9af1-9938baff3ed1> | 2007-11-14 05:28:05 +0000 |
| commit | 8dc345999942b1f213f54c2ce4f2878abdabac4a (patch) | |
| tree | da82d2cd90d043f2475b0d584869115fce349296 /openpicc/application/ssc_picc.c | |
| parent | 3fb02f719f0bea99548a6bc7fe7c37e9d25ce800 (diff) | |
Rewrite irq handlers according to the new information in http://www.freertos.org/portsam7xlwIP.html: /* Call the handler function. This must be a separate function unless you can guarantee that
handling the interrupt will never use any stack space. */
git-svn-id: https://svn.openpcd.org:2342/trunk@327 6dc7ffe9-61d6-0310-9af1-9938baff3ed1
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; |