diff options
Diffstat (limited to 'apps/system/i2c/i2c_get.c')
-rw-r--r-- | apps/system/i2c/i2c_get.c | 257 |
1 files changed, 0 insertions, 257 deletions
diff --git a/apps/system/i2c/i2c_get.c b/apps/system/i2c/i2c_get.c deleted file mode 100644 index 08510af4b..000000000 --- a/apps/system/i2c/i2c_get.c +++ /dev/null @@ -1,257 +0,0 @@ -/**************************************************************************** - * apps/system/i2c/i2c_get.c - * - * Copyright (C) 2011 Gregory Nutt. All rights reserved. - * Author: Gregory Nutt <gnutt@nuttx.org> - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * 3. Neither the name NuttX nor the names of its contributors may be - * used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS - * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE - * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, - * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS - * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED - * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN - * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - * - ****************************************************************************/ - -/**************************************************************************** - * Included Files - ****************************************************************************/ - -#include <nuttx/config.h> - -#include <stdlib.h> - -#include <nuttx/i2c.h> - -#include "i2ctool.h" - -/**************************************************************************** - * Definitions - ****************************************************************************/ - -/**************************************************************************** - * Private Types - ****************************************************************************/ - -/**************************************************************************** - * Private Function Prototypes - ****************************************************************************/ - -/**************************************************************************** - * Private Data - ****************************************************************************/ - -/**************************************************************************** - * Public Data - ****************************************************************************/ - -/**************************************************************************** - * Private Functions - ****************************************************************************/ - -/**************************************************************************** - * Public Functions - ****************************************************************************/ - -/**************************************************************************** - * Name: i2ccmd_get - ****************************************************************************/ - -int i2ccmd_get(FAR struct i2ctool_s *i2ctool, int argc, FAR char **argv) -{ - FAR struct i2c_dev_s *dev; - FAR char *ptr; - uint16_t result; - uint8_t regaddr; - long repititions; - int nargs; - int argndx; - int ret; - int i; - - /* Parse any command line arguments */ - - for (argndx = 1; argndx < argc; ) - { - /* Break out of the look when the last option has been parsed */ - - ptr = argv[argndx]; - if (*ptr != '-') - { - break; - } - - /* Otherwise, check for common options */ - - nargs = common_args(i2ctool, &argv[argndx]); - if (nargs < 0) - { - return ERROR; - } - argndx += nargs; - } - - /* There may be one more thing on the command line: The repitition - * count. - */ - - repititions = 1; - if (argndx < argc) - { - repititions = strtol(argv[argndx], NULL, 16); - if (repititions < 1) - { - i2ctool_printf(i2ctool, g_i2cargrange, argv[0]); - return ERROR; - } - - argndx++; - } - - if (argndx != argc) - { - i2ctool_printf(i2ctool, g_i2ctoomanyargs, argv[0]); - return ERROR; - } - - /* Get a handle to the I2C bus */ - - dev = up_i2cinitialize(i2ctool->bus); - if (!dev) - { - i2ctool_printf(i2ctool, "Failed to get bus %d\n", i2ctool->bus); - return ERROR; - } - - /* Set the frequency and the address (NOTE: Only 7-bit address supported now) */ - - I2C_SETFREQUENCY(dev, i2ctool->freq); - I2C_SETADDRESS(dev, i2ctool->addr, 7); - - /* Loop for the requested number of repititions */ - - regaddr = i2ctool->regaddr; - ret = OK; - - for (i = 0; i < repititions; i++) - { - /* Read from the I2C bus */ - - ret = i2ctool_get(i2ctool, dev, regaddr, &result); - - /* Display the result */ - - if (ret == OK) - { - i2ctool_printf(i2ctool, "READ Bus: %d Addr: %02x Subaddr: %02x Value: ", - i2ctool->bus, i2ctool->addr, i2ctool->regaddr); - if (i2ctool->width == 8) - { - i2ctool_printf(i2ctool, "%02x\n", result); - } - else - { - i2ctool_printf(i2ctool, "%04x\n", result); - } - } - else - { - i2ctool_printf(i2ctool, g_i2cxfrerror, argv[0], -ret); - break; - } - - /* Auto-increment the address if so configured */ - - if (i2ctool->autoincr) - { - regaddr++; - } - } - - (void)up_i2cuninitialize(dev); - return ret; -} - -/**************************************************************************** - * Name: i2ctool_get - ****************************************************************************/ - -int i2ctool_get(FAR struct i2ctool_s *i2ctool, FAR struct i2c_dev_s *dev, - uint8_t regaddr, uint16_t *result) -{ - struct i2c_msg_s msg[2]; - union - { - uint16_t data16; - uint8_t data8; - } u; - int ret; - - /* Set up data structures */ - - msg[0].addr = i2ctool->addr; - msg[0].flags = 0; - msg[0].buffer = ®addr; - msg[0].length = 1; - - msg[1].addr = i2ctool->addr; - msg[1].flags = I2C_M_READ; - if (i2ctool->width == 8) - { - msg[1].buffer = &u.data8; - msg[1].length = 1; - } - else - { - msg[1].buffer = (uint8_t*)&u.data16; - msg[1].length = 2; - } - - if (i2ctool->start) - { - ret = I2C_TRANSFER(dev, &msg[0], 1); - if (ret== OK) - { - ret = I2C_TRANSFER(dev, &msg[1], 1); - } - } - else - { - ret = I2C_TRANSFER(dev, msg, 2); - } - - /* Return the result of the read operation */ - - if (ret == OK) - { - if (i2ctool->width == 8) - { - *result = (uint16_t)u.data8; - } - else - { - *result = u.data16; - } - } - return ret; -} |