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firmata: initial work

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Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
This commit is contained in:
Brendan Le Foll
2016-03-07 14:49:42 +00:00
parent f2cbe1c68d
commit 78caa990f1
17 changed files with 1586 additions and 34 deletions
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77
src/aio/aio.c
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@@ -1,7 +1,7 @@
/*
* Author: Nandkishor Sonar
* Author: Brendan Le Foll <brendan.le.foll@intel.com>
* Copyright (c) 2014, 2015 Intel Corporation.
* Copyright (c) 2014-2016 Intel Corporation.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
@@ -56,7 +56,7 @@ aio_get_valid_fp(mraa_aio_context dev)
}
static mraa_aio_context
mraa_aio_init_internal(mraa_adv_func_t* func_table)
mraa_aio_init_internal(mraa_adv_func_t* func_table, int aio)
{
mraa_aio_context dev = calloc(1, sizeof(struct _aio));
if (dev == NULL) {
@@ -64,6 +64,20 @@ mraa_aio_init_internal(mraa_adv_func_t* func_table)
}
dev->advance_func = func_table;
if (IS_FUNC_DEFINED(dev, aio_init_internal_replace)) {
if (dev->advance_func->aio_init_internal_replace(dev, aio) == MRAA_SUCCESS) {
return dev;
}
free(dev);
return NULL;
}
// Open valid analog input file and get the pointer.
if (MRAA_SUCCESS != aio_get_valid_fp(dev)) {
free(dev);
return NULL;
}
return dev;
}
@@ -83,16 +97,37 @@ mraa_aio_init(unsigned int aio)
syslog(LOG_ERR, "aio: Sub platform Not Initialised");
return NULL;
}
pin = mraa_get_sub_platform_index(aio);
aio = mraa_get_sub_platform_index(aio);
}
// aio are always past the gpio_count in the pin array
pin = aio + board->gpio_count;
if (pin < 0 || pin >= board->phy_pin_count) {
syslog(LOG_ERR, "aio: pin %i beyond platform definition", pin);
return NULL;
}
if (aio > board->aio_count) {
syslog(LOG_ERR, "aio: requested channel out of range");
return NULL;
}
if (board->pins[pin].capabilites.aio != 1) {
syslog(LOG_ERR, "aio: pin %i not capable of aio", pin);
return NULL;
}
if (board->pins[pin].aio.mux_total > 0) {
if (mraa_setup_mux_mapped(board->pins[pin].aio) != MRAA_SUCCESS) {
syslog(LOG_ERR, "aio: unable to setup multiplexers for pin");
return NULL;
}
}
// Create ADC device connected to specified channel
mraa_aio_context dev = mraa_aio_init_internal(board->adv_func);
mraa_aio_context dev = mraa_aio_init_internal(board->adv_func, aio);
if (dev == NULL) {
syslog(LOG_ERR, "aio: Insufficient memory for specified input channel %d", aio);
return NULL;
}
pin = aio + board->gpio_count;
dev->channel = board->pins[pin].aio.pinmap;
dev->value_bit = DEFAULT_BITS;
@@ -103,32 +138,6 @@ mraa_aio_init(unsigned int aio)
return NULL;
}
}
if (aio > board->aio_count) {
syslog(LOG_ERR, "aio: requested channel out of range");
free(dev);
return NULL;
}
if (board->pins[pin].capabilites.aio != 1) {
syslog(LOG_ERR, "aio: pin uncapable of aio");
free(dev);
return NULL;
}
if (board->pins[pin].aio.mux_total > 0) {
if (mraa_setup_mux_mapped(board->pins[pin].aio) != MRAA_SUCCESS) {
free(dev);
syslog(LOG_ERR, "aio: unable to setup multiplexers for pin");
return NULL;
}
}
// Open valid analog input file and get the pointer.
if (MRAA_SUCCESS != aio_get_valid_fp(dev)) {
free(dev);
return NULL;
}
raw_bits = mraa_adc_raw_bits();
if (IS_FUNC_DEFINED(dev, aio_init_post)) {
mraa_result_t ret = dev->advance_func->aio_init_post(dev);
@@ -138,12 +147,18 @@ mraa_aio_init(unsigned int aio)
}
}
raw_bits = mraa_adc_raw_bits();
return dev;
}
unsigned int
mraa_aio_read(mraa_aio_context dev)
{
if (IS_FUNC_DEFINED(dev, aio_read_replace)) {
return dev->advance_func->aio_read_replace(dev);
}
char buffer[17];
unsigned int shifter_value = 0;