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periphmraa: Create IndexLookup functions for GPIO, I2C, SPI, PWM

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These lookups provide the MRAA index with the Pin/Bus name as input

Signed-off-by: Vineela Tummalapalli <vineela.tummalapalli@intel.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
This commit is contained in:
Vineela Tummalapalli
2017-04-06 17:38:44 -07:00
committed by Noel Eck
parent 7bc069a8fd
commit 913eaf2440
5 changed files with 209 additions and 2 deletions
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82
src/mraa.c
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@@ -799,8 +799,9 @@ mraa_get_platform_pin_count(uint8_t platform_offset)
char*
mraa_get_pin_name(int pin)
{
if (plat == NULL)
if (plat == NULL) {
return 0;
}
mraa_board_t* current_plat = plat;
if (mraa_is_sub_platform_id(pin)) {
@@ -812,11 +813,88 @@ mraa_get_pin_name(int pin)
pin = mraa_get_sub_platform_index(pin);
}
if (pin > (current_plat->phy_pin_count - 1) || pin < 0)
if (pin > (current_plat->phy_pin_count - 1) || pin < 0) {
return NULL;
}
return (char*) current_plat->pins[pin].name;
}
int mraa_gpio_lookup(const char* pin_name)
{
if (plat == NULL) {
return -1;
}
if (strlen(pin_name) == 0) {
return -1;
}
int i = 0;
for (; i < plat->gpio_count; i++) {
if (0 == strcmp(pin_name, plat->pins[i].name)) {
return plat->pins[i].gpio.pinmap;
}
}
return -1;
}
int mraa_i2c_lookup(const char* i2c_name)
{
if (plat == NULL) {
return -1;
}
if (strlen(i2c_name) == 0) {
return -1;
}
int i = 0;
for (; i < plat->i2c_bus_count; i++) {
if (0 == strcmp(i2c_name, plat->i2c_bus[i].name)) {
return plat->i2c_bus[i].bus_id;
}
}
return -1;
}
int mraa_spi_lookup(const char* spi_name)
{
if (plat == NULL) {
return -1;
}
if (strlen(spi_name) == 0) {
return -1;
}
int i = 0;
for (; i < plat->spi_bus_count; i++) {
if (0 == strcmp(spi_name, plat->spi_bus[i].name)) {
return plat->spi_bus[i].bus_id;
}
}
return -1;
}
int mraa_pwm_lookup(const char* pwm_name)
{
if (plat == NULL) {
return -1;
}
if (strlen(pwm_name) == 0) {
return -1;
}
int i = 0;
for (; i < plat->pwm_dev_count; i++) {
if (0 == strcmp(pwm_name, plat->pwm_dev[i].name)) {
return plat->pwm_dev[i].index;
}
}
return -1;
}
int
mraa_get_default_i2c_bus(uint8_t platform_offset)
{