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mb9bf650l gpio driver WIP
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2 files changed

+162
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‎targets/chip/mb9bf566k/io/port.hpp‎

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#include <cstdint>
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#include <cstddef>
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#include <klib/klib.hpp>
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#include <targets/core/cypress/mb9bf560l/port.hpp>
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// global peripherals, not affected by chip package
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namespace klib::mb9bf566k::io::periph {
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};
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}
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namespace klib::mb9bf566k::io::detail::pins {
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using namespace klib::core::mb9bf560l::io::detail::pins;
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}
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namespace klib::mb9bf566k::io {
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template <typename Pin>
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using pin_in = klib::core::mb9bf560l::io::pin_in<Pin>;
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template <typename Pin>
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using pin_out = klib::core::mb9bf560l::io::pin_out<Pin>;
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}
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#endif

‎targets/core/cypress/mb9bf560l/port.hpp‎

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#ifndef KLIB_CYPRESS_MB9BF560L_PORT_HPP
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#define KLIB_CYPRESS_MB9BF560L_PORT_HPP
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#include <cstdint>
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#include <klib/klib.hpp>
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namespace klib::core::mb9bf560l::io::detail::alternate {
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// alternate functions for all the gpio
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// default function (view reference manual for
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// default functions for every pin)
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struct none {};
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// alternate function for analog pins
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struct analog {};
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}
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namespace klib::core::mb9bf560l::io::detail::pins {
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// get the pin mask of a pin number
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template <typename Pin>
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constexpr uint32_t mask = 1U << Pin::number;
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/**
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* @brief Helper function to set a pin to a specific peripheral
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*
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* @tparam Pin
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* @tparam Periph
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*/
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template <typename Pin, typename Periph>
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static void set_peripheral() {
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// check if we have a analog pin
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constexpr static bool has_analog = requires() {
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// if we have a analog number we have a analog pin
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(void)Pin::analog_number;
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};
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// make sure we are not setting a pin that does not have
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// analog to analog
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static_assert(
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!std::is_same_v<Periph, io::detail::alternate::analog> ||
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(std::is_same_v<Periph, io::detail::alternate::analog> && has_analog),
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"Pin does not support analog"
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);
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// always disable analog mode if we are not switching to analog mode
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if (!std::is_same_v<Periph, io::detail::alternate::analog>) {
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// disable the analog mode if it is available on the pin
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if constexpr (has_analog) {
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// disable the analog mode
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Pin::port::port->ADE &= (~detail::pins::mask<Pin>);
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}
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}
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// get the pointer to the pin select we need to write to
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volatile uint32_t *const pfr = (reinterpret_cast<volatile uint32_t *const>(Pin::port::port->PFR0));
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// set the alternate function
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if constexpr (std::is_same_v<Periph, io::detail::alternate::none>) {
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// enable control using the PIO. Disables peripheral
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// control of the pin
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pfr[Pin::port::id] &= (~detail::pins::mask<Pin>);
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}
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else if constexpr (std::is_same_v<Periph, io::detail::alternate::analog>) {
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// set the pin to analog mode
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Pin::port::port->ADE |= detail::pins::mask<Pin>;
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}
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}
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}
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namespace klib::core::mb9bf560l::io {
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template <typename Pin>
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class pin_in {
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public:
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constexpr static void init() {
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// clear all the alternate functions
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detail::pins::set_peripheral<Pin, io::detail::alternate::none>();
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// get the pointer to the pin select we need to write to
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volatile uint32_t *const ddr = (reinterpret_cast<volatile uint32_t *const>(Pin::port::port->DDR0));
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// disable the output on the pin
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ddr[Pin::port::id] &= (~detail::pins::mask<Pin>);
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}
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constexpr static bool get() {
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// get the pointer to the pin select we need to write to
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volatile uint32_t *const pdir = (reinterpret_cast<volatile uint32_t *const>(Pin::port::port->PDIR0));
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// get the status of the pin
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return pdir[Pin::port::id] & detail::pins::mask<Pin>;
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}
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template <bool Val>
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constexpr static void pullup_enable() {
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// get the pointer to the pin select we need to write to
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volatile uint32_t *const pcr = (reinterpret_cast<volatile uint32_t *const>(Pin::port::port->PCR0));
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if constexpr (Val) {
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pcr[Pin::port::id] |= detail::pins::mask<Pin>;
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}
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else {
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pcr[Pin::port::id] &= (~detail::pins::mask<Pin>);
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}
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}
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};
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template <typename Pin>
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class pin_out {
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public:
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constexpr static void init() {
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// clear all the alternate functions
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detail::pins::set_peripheral<Pin, io::detail::alternate::none>();
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// get the pointer to the pin select we need to write to
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volatile uint32_t *const ddr = (reinterpret_cast<volatile uint32_t *const>(Pin::port::port->DDR0));
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// // enable the gpio output
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ddr[Pin::port::id] |= detail::pins::mask<Pin>;
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}
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template <bool Val>
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constexpr static void set() {
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// get the pointer to the pin select we need to write to
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volatile uint32_t *const pdor = (reinterpret_cast<volatile uint32_t *const>(Pin::port::port->PDOR0));
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if constexpr (Val) {
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pdor[Pin::port::id] |= detail::pins::mask<Pin>;
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}
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else {
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pdor[Pin::port::id] &= (~detail::pins::mask<Pin>);
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}
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}
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constexpr static void set(const bool val) {
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// get the pointer to the pin select we need to write to
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volatile uint32_t *const pdor = (reinterpret_cast<volatile uint32_t *const>(Pin::port::port->PDOR0));
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if (val) {
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pdor[Pin::port::id] |= detail::pins::mask<Pin>;
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}
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else {
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pdor[Pin::port::id] &= (~detail::pins::mask<Pin>);
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}
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}
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};
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}
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#endif

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