From 5bd58bc309e959537e3e820abfa39ee629b140a5 Mon Sep 17 00:00:00 2001 From: Martin Braun Date: Tue, 7 Oct 2014 09:39:25 +0200 Subject: Reorganized firmware/ subdirectory (x300->usrp3, zpu->usrp2) --- firmware/usrp2/lib/ad9510.c | 42 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 firmware/usrp2/lib/ad9510.c (limited to 'firmware/usrp2/lib/ad9510.c') diff --git a/firmware/usrp2/lib/ad9510.c b/firmware/usrp2/lib/ad9510.c new file mode 100644 index 000000000..4021a9bf7 --- /dev/null +++ b/firmware/usrp2/lib/ad9510.c @@ -0,0 +1,42 @@ +/* + * Copyright 2012 Ettus Research LLC + * 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 . + */ + +#include "ad9510.h" +#include "spi.h" +#include + +#define RD (1 << 15) +#define WR (0 << 15) + +void +ad9510_write_reg(int regno, uint8_t value) +{ + uint32_t inst = WR | (regno & 0xff); + uint32_t v = (inst << 8) | (value & 0xff); + spi_transact(SPI_TXONLY, SPI_SS_AD9510, v, 24, SPI_PUSH_FALL); +} + +int +ad9510_read_reg(int regno) +{ + uint32_t inst = RD | (regno & 0xff); + uint32_t v = (inst << 8) | 0; + uint32_t r = spi_transact(SPI_TXRX, SPI_SS_AD9510, v, 24, + SPI_PUSH_FALL | SPI_LATCH_FALL); + return r & 0xff; +} -- cgit v1.2.3