e100: removed usrp from directory prefix

1 files changed, 393 insertions, 0 deletions

diff --git a/host/lib/usrp/e100/e100_iface.cpp b/host/lib/usrp/e100/e100_iface.cpp
new file mode 100644
index 000000000..d61ef42ad
--- /dev/null
+++ b/host/lib/usrp/e100/e100_iface.cpp
@@ -0,0 +1,393 @@
+//
+// Copyright 2010-2011 Ettus Research LLC
+//
+// 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 "e100_iface.hpp"
+#include "e100_regs.hpp"
+#include <uhd/exception.hpp>
+#include <uhd/utils/msg.hpp>
+#include <sys/ioctl.h> //ioctl
+#include <fcntl.h> //open, close
+#include <linux/usrp_e.h> //ioctl structures and constants
+#include <boost/thread/thread.hpp> //sleep
+#include <boost/format.hpp>
+#include <boost/thread/mutex.hpp>
+#include <linux/i2c-dev.h>
+#include <linux/i2c.h>
+#include <iostream>
+#include <fstream>
+
+using namespace uhd;
+using namespace uhd::usrp;
+
+/***********************************************************************
+ * I2C device node implementation wrapper
+ **********************************************************************/
+class i2c_dev_iface : public i2c_iface{
+public:
+    i2c_dev_iface(const std::string &node){
+        if ((_node_fd = ::open(node.c_str(), O_RDWR)) < 0){
+            throw uhd::io_error("Failed to open " + node);
+        }
+    }
+
+    ~i2c_dev_iface(void){
+        ::close(_node_fd);
+    }
+
+    void write_i2c(boost::uint8_t addr, const byte_vector_t &bytes){
+        byte_vector_t rw_bytes(bytes);
+
+        //setup the message
+        i2c_msg msg;
+        msg.addr = addr;
+        msg.flags = 0;
+        msg.len = bytes.size();
+        msg.buf = &rw_bytes.front();
+
+        //setup the data
+        i2c_rdwr_ioctl_data data;
+        data.msgs = &msg;
+        data.nmsgs = 1;
+
+        //call the ioctl
+        UHD_ASSERT_THROW(::ioctl(_node_fd, I2C_RDWR, &data) >= 0);
+    }
+
+    byte_vector_t read_i2c(boost::uint8_t addr, size_t num_bytes){
+        byte_vector_t bytes(num_bytes);
+
+        //setup the message
+        i2c_msg msg;
+        msg.addr = addr;
+        msg.flags = I2C_M_RD;
+        msg.len = bytes.size();
+        msg.buf = &bytes.front();
+
+        //setup the data
+        i2c_rdwr_ioctl_data data;
+        data.msgs = &msg;
+        data.nmsgs = 1;
+
+        //call the ioctl
+        UHD_ASSERT_THROW(::ioctl(_node_fd, I2C_RDWR, &data) >= 0);
+
+        return bytes;
+    }
+
+private: int _node_fd;
+};
+
+/***********************************************************************
+ * USRP-E100 interface implementation
+ **********************************************************************/
+class e100_iface_impl : public e100_iface{
+public:
+
+    int get_file_descriptor(void){
+        return _node_fd;
+    }
+
+    void open(const std::string &node){
+        UHD_MSG(status) << "Opening device node " << node << "..." << std::endl;
+
+        //open the device node and check file descriptor
+        if ((_node_fd = ::open(node.c_str(), O_RDWR)) < 0){
+            throw uhd::io_error("Failed to open " + node);
+        }
+
+        //check the module compatibility number
+        int module_compat_num = ::ioctl(_node_fd, USRP_E_GET_COMPAT_NUMBER, NULL);
+        if (module_compat_num != USRP_E_COMPAT_NUMBER){
+            throw uhd::runtime_error(str(boost::format(
+                "Expected module compatibility number 0x%x, but got 0x%x:\n"
+                "The module build is not compatible with the host code build."
+            ) % USRP_E_COMPAT_NUMBER % module_compat_num));
+        }
+    }
+
+    void close(void){
+        ::close(_node_fd);
+        _node_fd = -1;
+    }
+
+    /*******************************************************************
+     * Structors
+     ******************************************************************/
+    e100_iface_impl(void):
+        _node_fd(-1),
+        _i2c_dev_iface(i2c_dev_iface("/dev/i2c-3"))
+    {
+        mb_eeprom = mboard_eeprom_t(get_i2c_dev_iface(), mboard_eeprom_t::MAP_E100);
+    }
+
+    ~e100_iface_impl(void){
+        if (_node_fd >= 0) this->close();
+    }
+
+    /*******************************************************************
+     * IOCTL: provides the communication base for all other calls
+     ******************************************************************/
+    void ioctl(int request, void *mem){
+        boost::mutex::scoped_lock lock(_ctrl_mutex);
+
+        if (::ioctl(_node_fd, request, mem) < 0){
+            throw uhd::os_error(str(
+                boost::format("ioctl failed with request %d") % request
+            ));
+        }
+    }
+
+    /*******************************************************************
+     * I2C device node interface
+     ******************************************************************/
+    i2c_iface &get_i2c_dev_iface(void){
+        return _i2c_dev_iface;
+    }
+
+    /*******************************************************************
+     * Peek and Poke
+     ******************************************************************/
+    void poke32(boost::uint32_t addr, boost::uint32_t value){
+        //load the data struct
+        usrp_e_ctl32 data;
+        data.offset = addr;
+        data.count = 1;
+        data.buf[0] = value;
+
+        //call the ioctl
+        this->ioctl(USRP_E_WRITE_CTL32, &data);
+    }
+
+    void poke16(boost::uint32_t addr, boost::uint16_t value){
+        //load the data struct
+        usrp_e_ctl16 data;
+        data.offset = addr;
+        data.count = 1;
+        data.buf[0] = value;
+
+        //call the ioctl
+        this->ioctl(USRP_E_WRITE_CTL16, &data);
+    }
+
+    boost::uint32_t peek32(boost::uint32_t addr){
+        //load the data struct
+        usrp_e_ctl32 data;
+        data.offset = addr;
+        data.count = 1;
+
+        //call the ioctl
+        this->ioctl(USRP_E_READ_CTL32, &data);
+
+        return data.buf[0];
+    }
+
+    boost::uint16_t peek16(boost::uint32_t addr){
+        //load the data struct
+        usrp_e_ctl16 data;
+        data.offset = addr;
+        data.count = 1;
+
+        //call the ioctl
+        this->ioctl(USRP_E_READ_CTL16, &data);
+
+        return data.buf[0];
+    }
+
+    /*******************************************************************
+     * I2C
+     ******************************************************************/
+    static const size_t max_i2c_data_bytes = 10;
+
+    void write_i2c(boost::uint8_t addr, const byte_vector_t &bytes){
+        //allocate some memory for this transaction
+        UHD_ASSERT_THROW(bytes.size() <= max_i2c_data_bytes);
+        boost::uint8_t mem[sizeof(usrp_e_i2c) + max_i2c_data_bytes];
+
+        //load the data struct
+        usrp_e_i2c *data = reinterpret_cast<usrp_e_i2c*>(mem);
+        data->addr = addr;
+        data->len = bytes.size();
+        std::copy(bytes.begin(), bytes.end(), data->data);
+
+        //call the spi ioctl
+        this->ioctl(USRP_E_I2C_WRITE, data);
+    }
+
+    byte_vector_t read_i2c(boost::uint8_t addr, size_t num_bytes){
+        //allocate some memory for this transaction
+        UHD_ASSERT_THROW(num_bytes <= max_i2c_data_bytes);
+        boost::uint8_t mem[sizeof(usrp_e_i2c) + max_i2c_data_bytes];
+
+        //load the data struct
+        usrp_e_i2c *data = reinterpret_cast<usrp_e_i2c*>(mem);
+        data->addr = addr;
+        data->len = num_bytes;
+
+        //call the spi ioctl
+        this->ioctl(USRP_E_I2C_READ, data);
+
+        //unload the data
+        byte_vector_t bytes(data->len);
+        UHD_ASSERT_THROW(bytes.size() == num_bytes);
+        std::copy(data->data, data->data+bytes.size(), bytes.begin());
+        return bytes;
+    }
+
+    /*******************************************************************
+     * SPI
+     ******************************************************************/
+    boost::uint32_t transact_spi(
+        int which_slave,
+        const spi_config_t &config,
+        boost::uint32_t bits,
+        size_t num_bits,
+        bool readback
+    ){
+        if (which_slave == UE_SPI_SS_AD9522) return bitbang_spi(
+            bits, num_bits, readback
+        );
+
+        //load data struct
+        usrp_e_spi data;
+        data.readback = (readback)? UE_SPI_TXRX : UE_SPI_TXONLY;
+        data.slave = which_slave;
+        data.length = num_bits;
+        data.data = bits;
+
+        //load the flags
+        data.flags = 0;
+        data.flags |= (config.miso_edge == spi_config_t::EDGE_RISE)? UE_SPI_LATCH_RISE : UE_SPI_LATCH_FALL;
+        data.flags |= (config.mosi_edge == spi_config_t::EDGE_RISE)? UE_SPI_PUSH_FALL  : UE_SPI_PUSH_RISE;
+
+        //call the spi ioctl
+        this->ioctl(USRP_E_SPI, &data);
+
+        //unload the data
+        return data.data;
+    }
+
+    boost::uint32_t bitbang_spi(
+        boost::uint32_t bits,
+        size_t num_bits,
+        bool readback
+    ){
+        boost::uint32_t rb_bits = 0;
+
+        _spi_bitbanger.spi_sen_gpio_write(0);
+
+        for (size_t i = 0; i < num_bits; i++){
+            _spi_bitbanger.spi_sclk_gpio_write(0);
+            _spi_bitbanger.spi_mosi_gpio_write((bits >> (num_bits-i-1)) & 0x1);
+            boost::this_thread::sleep(boost::posix_time::microseconds(10));
+            if (readback) rb_bits = (rb_bits << 1) | _spi_bitbanger.spi_miso_gpio_read();
+            _spi_bitbanger.spi_sclk_gpio_write(1);
+            boost::this_thread::sleep(boost::posix_time::microseconds(10));
+        }
+
+        _spi_bitbanger.spi_sen_gpio_write(1);
+        boost::this_thread::sleep(boost::posix_time::microseconds(100));
+
+        return rb_bits;
+    }
+
+    class bitbang_spi_guts{
+    public:
+        bitbang_spi_guts(void){
+            //setup gpio pin directions
+            this->set_gpio_direction(spi_sclk_gpio, "out");
+            this->set_gpio_direction(spi_sen_gpio, "out");
+            this->set_gpio_direction(spi_mosi_gpio, "out");
+            this->set_gpio_direction(spi_miso_gpio, "in");
+
+            //open the gpio pin values
+            _spi_sclk_gpio_value.open(str(boost::format("/sys/class/gpio/gpio%d/value") % spi_sclk_gpio).c_str());
+            _spi_sen_gpio_value.open(str(boost::format("/sys/class/gpio/gpio%d/value") % spi_sen_gpio).c_str());
+            _spi_mosi_gpio_value.open(str(boost::format("/sys/class/gpio/gpio%d/value") % spi_mosi_gpio).c_str());
+            _spi_miso_gpio_value.open(str(boost::format("/sys/class/gpio/gpio%d/value") % spi_miso_gpio).c_str());
+        }
+
+        ~bitbang_spi_guts(void){
+            this->set_gpio_direction(spi_sclk_gpio, "in");
+            this->set_gpio_direction(spi_sen_gpio, "in");
+            this->set_gpio_direction(spi_mosi_gpio, "in");
+        }
+
+        void spi_sclk_gpio_write(int val){
+            _spi_sclk_gpio_value << val << std::endl << std::flush;
+        }
+
+        void spi_sen_gpio_write(int val){
+            _spi_sen_gpio_value << val << std::endl << std::flush;
+        }
+
+        void spi_mosi_gpio_write(int val){
+            _spi_mosi_gpio_value << val << std::endl << std::flush;
+        }
+
+        int spi_miso_gpio_read(void){
+            std::string val;
+            std::getline(_spi_miso_gpio_value, val);
+            _spi_miso_gpio_value.seekg(0);
+            return int(val.at(0) - '0') & 0x1;
+        }
+
+    private:
+        enum{
+            spi_sclk_gpio = 65,
+            spi_sen_gpio = 186,
+            spi_mosi_gpio = 145,
+            spi_miso_gpio = 147,
+        };
+
+        void set_gpio_direction(int gpio_num, const std::string &dir){
+            std::ofstream export_file("/sys/class/gpio/export");
+            export_file << gpio_num << std::endl << std::flush;
+            export_file.close();
+
+            std::ofstream dir_file(str(boost::format("/sys/class/gpio/gpio%d/direction") % gpio_num).c_str());
+            dir_file << dir << std::endl << std::flush;
+            dir_file.close();
+        }
+
+        std::ofstream _spi_sclk_gpio_value, _spi_sen_gpio_value, _spi_mosi_gpio_value;
+        std::ifstream _spi_miso_gpio_value;
+    };
+
+    /*******************************************************************
+     * UART
+     ******************************************************************/
+    void write_uart(boost::uint8_t, const std::string &) {
+        throw uhd::not_implemented_error("Unhandled command write_uart()");
+    }
+
+    std::string read_uart(boost::uint8_t) {
+        throw uhd::not_implemented_error("Unhandled command read_uart()");
+    }
+
+private:
+    int _node_fd;
+    i2c_dev_iface _i2c_dev_iface;
+    boost::mutex _ctrl_mutex;
+    bitbang_spi_guts _spi_bitbanger;
+};
+
+/***********************************************************************
+ * Public Make Function
+ **********************************************************************/
+e100_iface::sptr e100_iface::make(void){
+    return sptr(new e100_iface_impl());
+}