diff options
| author | henryk <henryk@6dc7ffe9-61d6-0310-9af1-9938baff3ed1> | 2008-03-18 10:34:09 +0000 |
|---|---|---|
| committer | henryk <henryk@6dc7ffe9-61d6-0310-9af1-9938baff3ed1> | 2008-03-18 10:34:09 +0000 |
| commit | af156e105101487dc5df0248c0171902867e74b9 (patch) | |
| tree | 997c667dd0b00f22f8c3502846f0cb9c0efe1cf3 /openpicc/application | |
| parent | 00488946bbaca6575b5a36afd56d8a3b75b7bb43 (diff) | |
Only set up clocks once in the layer 2a code
git-svn-id: https://svn.openpcd.org:2342/trunk@463 6dc7ffe9-61d6-0310-9af1-9938baff3ed1
Diffstat (limited to 'openpicc/application')
| -rw-r--r-- | openpicc/application/iso14443_layer2a.c | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/openpicc/application/iso14443_layer2a.c b/openpicc/application/iso14443_layer2a.c index 2c2de3a..fc1d8e4 100644 --- a/openpicc/application/iso14443_layer2a.c +++ b/openpicc/application/iso14443_layer2a.c @@ -129,7 +129,7 @@ int iso14443_transmit(ssc_dma_tx_buffer_t *buffer, unsigned int fdt, u_int8_t as tx_pending = 1; /* Immediately set up FDT and clock */ - clock_switch(CLOCK_SELECT_CARRIER); + //clock_switch(CLOCK_SELECT_CARRIER); ssc_set_gate(0); tc_fdt_set(fdt); // We'll keep the divider at 8 @@ -207,7 +207,7 @@ static void iso14443_ssc_callback(ssc_callback_reason reason, void *data) } if( reason == SSC_CALLBACK_RX_FRAME_ENDED && fast_receive ) { - clock_switch(CLOCK_SELECT_CARRIER); /* A Tx might be coming up */ + //clock_switch(CLOCK_SELECT_CARRIER); /* A Tx might be coming up */ ssc_dma_rx_buffer_t *buffer = data; if(callback != NULL) @@ -220,7 +220,7 @@ static void iso14443_ssc_callback(ssc_callback_reason reason, void *data) // clock_switch(CLOCK_SELECT_PLL); * however, the SSC Rx code is going to go away (at least for 14443-A) * and switching clocks messes up the Tx timing, so we do a */ - clock_switch(CLOCK_SELECT_CARRIER); + //clock_switch(CLOCK_SELECT_CARRIER); ssc_set_gate(1); tc_fdt_set(0xff00); // We'll keep the divider at 8 @@ -237,7 +237,7 @@ static void iso14443_ssc_callback(ssc_callback_reason reason, void *data) static void iso14443_tc_recv_callback(tc_recv_callback_reason reason, void *data) { if( reason == TC_RECV_CALLBACK_RX_FRAME_ENDED && fast_receive ) { - clock_switch(CLOCK_SELECT_CARRIER); /* A Tx might be coming up */ + //clock_switch(CLOCK_SELECT_CARRIER); /* A Tx might be coming up */ iso14443_frame *frame = data; if(callback != NULL) @@ -247,7 +247,7 @@ static void iso14443_tc_recv_callback(tc_recv_callback_reason reason, void *data if( (reason == TC_RECV_CALLBACK_RX_FRAME_ENDED && !tx_pending) || reason == TC_RECV_CALLBACK_SETUP ) { /* For T/C Rx we set the clock to */ - clock_switch(CLOCK_SELECT_CARRIER); + //clock_switch(CLOCK_SELECT_CARRIER); ssc_set_gate(1); tc_fdt_set(0xff00); // We'll keep the divider at 8 @@ -276,7 +276,18 @@ int iso14443_layer2a_init(u_int8_t enable_fast_receive) if(ssc == NULL) return -EIO; - if(tc_recv_init(&th, 0, iso14443_tc_recv_callback) < 0) { + int pauses_count; + if(OPENPICC->features.clock_switching) { + clock_switch(CLOCK_SELECT_CARRIER); + pauses_count = 0; + } else { + if(OPENPICC->default_clock == CLOCK_SELECT_CARRIER) { + pauses_count = 0; + } else { + return -ENOTSUP; + } + } + if(tc_recv_init(&th, pauses_count, iso14443_tc_recv_callback) < 0) { ssc_close(ssc); return -EIO; } |