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author | Gregory Nutt <gnutt@nuttx.org> | 2014-06-23 12:19:50 -0600 |
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committer | Gregory Nutt <gnutt@nuttx.org> | 2014-06-23 12:19:50 -0600 |
commit | 19f6299b906d846250a647b214836caf4f3e44fc (patch) | |
tree | afccf4ce38f13c6e164e352186224cce2454420e /nuttx/configs/lpcxpresso-lpc1768/src/up_adc.c | |
parent | 0ebbf0438116b8771e4ae2c06232b7828bfdaf45 (diff) | |
parent | 08d4aca769f4a4895522ffe93da32ea9a5995061 (diff) | |
download | nuttx-19f6299b906d846250a647b214836caf4f3e44fc.tar.gz nuttx-19f6299b906d846250a647b214836caf4f3e44fc.tar.bz2 nuttx-19f6299b906d846250a647b214836caf4f3e44fc.zip |
Merge remote-tracking branch 'origin/master' into netiob
Diffstat (limited to 'nuttx/configs/lpcxpresso-lpc1768/src/up_adc.c')
-rw-r--r-- | nuttx/configs/lpcxpresso-lpc1768/src/up_adc.c | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/nuttx/configs/lpcxpresso-lpc1768/src/up_adc.c b/nuttx/configs/lpcxpresso-lpc1768/src/up_adc.c new file mode 100644 index 000000000..cb5b296b9 --- /dev/null +++ b/nuttx/configs/lpcxpresso-lpc1768/src/up_adc.c @@ -0,0 +1,123 @@ +/************************************************************************************ + * configs/lpcexpresso-1768/src/up_adc.c + * arch/arm/src/board/up_adc.c + * + * Copyright (C) 2013 Zilogic Systems. All rights reserved. + * Author: Kannan <code@nuttx.org> + * + * Based on configs/stm3220g-eval/src/up_adc.c + * + * Copyright (C) 2012, 2014 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 <errno.h> +#include <debug.h> + +#include <nuttx/analog/adc.h> +#include <arch/board/board.h> + +#include "chip.h" +#include "up_arch.h" + +#include "lpc17_adc.h" +#include "lpcxpresso_internal.h" + +#ifdef CONFIG_ADC + +/************************************************************************************ + * Definitions + ************************************************************************************/ + +/************************************************************************************ + * Private Data + ************************************************************************************/ + +/************************************************************************************ + * Private Functions + ************************************************************************************/ + +/************************************************************************************ + * Public Functions + ************************************************************************************/ + +/************************************************************************************ + * Name: adc_devinit + * + * Description: + * All LPC17 architectures must provide the following interface to work with + * examples/adc. + * + ************************************************************************************/ + +int adc_devinit(void) +{ + static bool initialized = false; + struct adc_dev_s *adc; + int ret; + + /* Check if we have already initialized */ + + if (!initialized) + { + /* Call lpc17_adcinitialize() to get an instance of the ADC interface */ + + adc = lpc17_adcinitialize(); + if (adc == NULL) + { + adbg("ERROR: Failed to get ADC interface\n"); + return -ENODEV; + } + + /* Register the ADC driver at "/dev/adc0" */ + + ret = adc_register("/dev/adc0", adc); + if (ret < 0) + { + adbg("adc_register failed: %d\n", ret); + return ret; + } + + /* Now we are initialized */ + + initialized = true; + } + + return OK; +} + +#endif /* CONFIG_ADC */ |