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authorJosh Blum2011-10-19 16:53:11 -0700
committerJosh Blum2011-10-19 16:53:11 -0700
commit604ae82b9f31d8b5d7775810ab2fa06b7595bea0 (patch)
treefe4c7ad82dca0d92d90e37c4b68dd729d29a9d66 /usrp2/firmware/lib/lsadc.c
parentd8d886d42ef9966e0578f39f180348e908965f7a (diff)
parenteb95f431badf197b249131a3119a92bd5317621b (diff)
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Merge branch 'next' of http://gnuradio.org/git/gnuradio into next
Diffstat (limited to 'usrp2/firmware/lib/lsadc.c')
-rw-r--r--usrp2/firmware/lib/lsadc.c73
1 files changed, 0 insertions, 73 deletions
diff --git a/usrp2/firmware/lib/lsadc.c b/usrp2/firmware/lib/lsadc.c
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--- a/usrp2/firmware/lib/lsadc.c
+++ /dev/null
@@ -1,73 +0,0 @@
-/* -*- c++ -*- */
-/*
- * Copyright 2008 Free Software Foundation, Inc.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include "lsadc.h"
-#include "spi.h"
-#include "memory_map.h"
-
-
-// AD9712 or AD7922 1 MS/s, 10-/12-bit ADCs
-
-//#define SPI_SS_DEBUG SPI_SS_RX_DB
-#define SPI_SS_DEBUG 0
-
-
-void
-lsadc_init(void)
-{
- // nop
-}
-
-/*
- * The ADC's are pipelined. That is, you have to tell them
- * which of the two inputs you want one cycle ahead of time.
- * We could optimize and keep track of which one we used last
- * time, but for simplicity we'll always tell it which
- * one we want. This takes 2 16-bit xfers, one to set the
- * input and one to read the one we want.
- */
-
-int
-_lsadc_read(int which_adc, int slave_select)
-{
- uint32_t r;
- int channel = which_adc & 0x1;
-
- // Set CHN and STY equal to channel number. We don't want "daisy chain mode"
- uint16_t cmd = (channel << 13) | (channel << 12);
-
- spi_transact(SPI_TXONLY, slave_select | SPI_SS_DEBUG,
- cmd, 16, SPIF_PUSH_RISE | SPIF_LATCH_RISE);
-
- r = spi_transact(SPI_TXRX, slave_select | SPI_SS_DEBUG,
- cmd, 16, SPIF_PUSH_RISE | SPIF_LATCH_RISE);
-
- return r & 0x0fff;
-}
-
-int
-lsadc_read_rx(int which_adc)
-{
- return _lsadc_read(which_adc, SPI_SS_RX_ADC);
-}
-
-int
-lsadc_read_tx(int which_adc)
-{
- return _lsadc_read(which_adc, SPI_SS_TX_ADC);
-}