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use hal::adc::{Channel, OneShot};
use cc3220sf::OCP_SHARED;
use crate::gpio::AlternateFunction;
use crate::gpio::gpioa0::{PA02, PA03, PA04, PA05};
pub trait AdcPin<Adc> {
fn to_adc_pin(&mut self) {
unimplemented!()
}
fn enable_channel(&mut self) {
unimplemented!()
}
fn fifo_read(&mut self) -> u32 {
unimplemented!()
}
fn get_fifo_lvl(&mut self) -> u8 {
unimplemented!()
}
}
pub struct Adc<ADC> {
#[allow(dead_code)]
adc: ADC,
}
impl AdcPin<ADC> for PA02<AlternateFunction> {
fn to_adc_pin(&mut self) {
unsafe {
(*OCP_SHARED::ptr()).gpio_pad_cmn_config.modify(
|r, w| w.bits(
r.bits() | 0x200
)
);
(*OCP_SHARED::ptr()).gpio_pad_config_2.write(
|w| w.bits(0xC00)
);
}
}
fn enable_channel(&mut self) {
unsafe {
(*ADC::ptr()).ch_enable.modify(
|_, w| w.adc_channel0_en().set_bit()
)
}
}
fn fifo_read(&mut self) -> u32 {
let mut data: u32;
unsafe {
data = (*ADC::ptr()).channel0fifodata.read().bits();
data = (data >> 2) & 0xFFF;
}
data
}
fn get_fifo_lvl(&mut self) -> u8 {
let lvl: u32;
unsafe {
lvl = (*ADC::ptr()).ch0_fifo_lvl.read().bits() & 0x7;
}
lvl as u8
}
}
impl AdcPin<ADC> for PA03<AlternateFunction> {
fn to_adc_pin(&mut self) {
unsafe {
(*OCP_SHARED::ptr()).gpio_pad_cmn_config.modify(
|r, w| w.bits(
r.bits() | 0x400
)
);
(*OCP_SHARED::ptr()).gpio_pad_config_3.write(
|w| w.bits(0xC00)
);
}
}
fn enable_channel(&mut self) {
unsafe {
(*ADC::ptr()).ch_enable.modify(
|_, w| w.adc_channel2_en().set_bit()
)
}
}
fn fifo_read(&mut self) -> u32 {
let mut data: u32;
unsafe {
data = (*ADC::ptr()).channel2fifodata.read().bits();
data = (data >> 2) & 0xFFF;
}
data
}
fn get_fifo_lvl(&mut self) -> u8 {
let lvl: u32;
unsafe {
lvl = (*ADC::ptr()).ch2_fifo_lvl.read().bits() & 0x7;
}
lvl as u8
}
}
impl AdcPin<ADC> for PA04<AlternateFunction> {
fn to_adc_pin(&mut self) {
unsafe {
(*OCP_SHARED::ptr()).gpio_pad_cmn_config.modify(
|r, w| w.bits(
r.bits() | 0x800
)
);
(*OCP_SHARED::ptr()).gpio_pad_config_4.write(
|w| w.bits(0xC00)
);
}
}
fn enable_channel(&mut self) {
unsafe {
(*ADC::ptr()).ch_enable.modify(
|_, w| w.adc_channel4_en().set_bit()
)
}
}
fn fifo_read(&mut self) -> u32 {
let mut data: u32;
unsafe {
data = (*ADC::ptr()).channel4fifodata.read().bits();
data = (data >> 2) & 0xFFF;
}
data
}
fn get_fifo_lvl(&mut self) -> u8 {
let lvl: u32;
unsafe {
lvl = (*ADC::ptr()).ch4_fifo_lvl.read().bits() & 0x7;
}
lvl as u8
}
}
impl AdcPin<ADC> for PA05<AlternateFunction> {
fn to_adc_pin(&mut self) {
unsafe {
(*OCP_SHARED::ptr()).gpio_pad_cmn_config.modify(
|r, w| w.bits(
r.bits() | 0x1000
)
);
(*OCP_SHARED::ptr()).gpio_pad_config_5.write(
|w| w.bits(0xC00)
);
}
}
fn enable_channel(&mut self) {
unsafe {
(*ADC::ptr()).ch_enable.modify(
|_, w| w.adc_channel6_en().set_bit()
)
}
}
fn fifo_read(&mut self) -> u32 {
let mut data: u32;
unsafe {
data = (*ADC::ptr()).channel6fifodata.read().bits();
data = (data >> 2) & 0xFFF;
}
data
}
fn get_fifo_lvl(&mut self) -> u8 {
let lvl: u32;
unsafe {
lvl = (*ADC::ptr()).ch6_fifo_lvl.read().bits() & 0x7;
}
lvl as u8
}
}
impl Channel<ADC> for PA02<AlternateFunction> {
type ID = u8;
fn channel() -> u8 { 0u8 }
}
impl Channel<ADC> for PA03<AlternateFunction> {
type ID = u8;
fn channel() -> u8 { 2u8 }
}
impl Channel<ADC> for PA04<AlternateFunction> {
type ID = u8;
fn channel() -> u8 { 4u8 }
}
impl Channel<ADC> for PA05<AlternateFunction> {
type ID = u8;
fn channel() -> u8 { 6u8 }
}
macro_rules! adc_macro {
($ADCX:ident, $adcx:ident) => {
use pac::$ADCX;
impl Adc<$ADCX> {
pub fn $adcx<ADCP>(
adc: $ADCX,
pin: &mut ADCP
) -> Self
where
ADCP: AdcPin<$ADCX>
{
static mut COUNT: u8 = 0;
let mut s = Self {
adc
};
unsafe {
if COUNT < 4 {
COUNT += 1;
pin.to_adc_pin();
s.enable_adc();
pin.enable_channel();
for _ in (0..5) {
while(pin.get_fifo_lvl() == 0) { }
let _discard_sample = pin.fifo_read();
}
}
}
s
}
pub fn enable_adc(&mut self) {
unsafe {
(*$ADCX::ptr()).ctrl.modify(
|_, w| w.adc_en_apps().set_bit()
)
}
}
pub fn disable_adc(&mut self) {
unsafe {
(*$ADCX::ptr()).ctrl.modify(
|_, w| w.adc_en_apps().clear_bit()
)
}
}
pub fn convert<ADCP>(&mut self, pin: &mut ADCP) -> u32
where
ADCP: AdcPin<$ADCX>
{
while pin.get_fifo_lvl() == 0 { }
let data: u32 = pin.fifo_read();
data
}
}
impl<WORD, PIN> OneShot<$ADCX, WORD, PIN> for Adc<$ADCX>
where
WORD: From<u32>,
PIN: Channel<$ADCX, ID=u8> + AdcPin<$ADCX>
{
type Error = ();
fn read(&mut self, _pin: &mut PIN) -> nb::Result<WORD, Self::Error> {
let result = self.convert(_pin);
Ok(result.into())
}
}
}
}
adc_macro!(ADC, adc);