diff options
author | Andreas Eversberg <jolly@eversberg.eu> | 2013-12-11 16:25:33 +0100 |
---|---|---|
committer | Andreas Eversberg <jolly@eversberg.eu> | 2014-01-29 09:49:22 +0100 |
commit | 277befa334314c5b8dbb1c437c35fafcb293aacf (patch) | |
tree | 2dd9c47beb7b4f18f3c03b204fe3b814aa82fe68 | |
parent | 088d1448e85077ac1131630327f2680758a8ba30 (diff) |
[WIP] HO: Transmit access bursts on DCCH of TCH channels
-rw-r--r-- | src/target/firmware/layer1/prim_rach.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/src/target/firmware/layer1/prim_rach.c b/src/target/firmware/layer1/prim_rach.c index 0e3a142b..b7672c3a 100644 --- a/src/target/firmware/layer1/prim_rach.c +++ b/src/target/firmware/layer1/prim_rach.c @@ -132,7 +132,7 @@ static uint8_t rach_to_t3_comb[27] = { 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 45, 46}; -/* request a RACH request at the next multiframe T3 = fn51 */ +/* schedule access burst */ void l1a_rach_req(uint16_t offset, uint8_t combined, uint8_t ra) { uint32_t fn_sched; @@ -145,7 +145,19 @@ void l1a_rach_req(uint16_t offset, uint8_t combined, uint8_t ra) } local_firq_save(flags); - if (combined) { + if (l1s.dedicated.type == GSM_DCHAN_TCH_F) { + fn_sched = l1s.current_time.fn + offset; + /* go next DCCH frame TCH/F channel */ + if ((fn_sched % 13) == 12) + fn_sched++; + } else if (l1s.dedicated.type == GSM_DCHAN_TCH_H) { + fn_sched = l1s.current_time.fn + offset; + /* go next DCCH frame of TCH/H channel */ + if ((fn_sched % 13) == 12) + fn_sched++; + if ((l1s.dedicated.chan_nr & 1) != ((fn_sched % 13) & 1)) + fn_sched++; + } else if (combined) { /* add elapsed RACH slots to offset */ offset += t3_to_rach_comb[l1s.current_time.t3]; /* offset is the number of RACH slots in the future */ @@ -155,6 +167,7 @@ void l1a_rach_req(uint16_t offset, uint8_t combined, uint8_t ra) } else fn_sched = l1s.current_time.fn + offset; l1s.rach.ra = ra; + fn_sched %= 2715648; sched_gsmtime(rach_sched_set_ul, fn_sched, 0); local_irq_restore(flags); |