84 lines
1.9 KiB
C++
84 lines
1.9 KiB
C++
#include "async.h"
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#include "aum1_cm1.h"
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#include "buffer.h"
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#include "crash.h"
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#include "gpio.h"
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#include "timer.h"
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#include "trace.h"
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#include "uart.h"
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namespace {
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using async::AwaitableType;
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void HandleUartRxFromIsr(void*, unsigned int) {
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tracing::trace(tracing::TraceEvent::kUartRxCb);
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async::resume(AwaitableType::kUartRx);
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}
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void Uart0Isr() {
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tracing::trace(tracing::TraceEvent::kUartIsr);
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XUartLite_InterruptHandler(uart0);
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}
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void Timer0Isr() {
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tracing::dump();
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__builtin_trap();
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}
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void SetupUart() {
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InitUarts();
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auto* vector_table = reinterpret_cast<uint32_t*>(0x0);
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vector_table[16 + HardFault_IRQn] =
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reinterpret_cast<uint32_t>(crash::HardFaultHandler);
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vector_table[16 + Uart0_IRQn] = reinterpret_cast<uint32_t>(Uart0Isr);
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vector_table[16 + Timer0_IRQn] = reinterpret_cast<uint32_t>(Timer0Isr);
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NVIC_SetPriority(Uart0_IRQn, 3);
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NVIC_EnableIRQ(Uart0_IRQn);
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XUartLite_SetSendHandler(uart0, HandleUartTxFromIsr, nullptr);
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XUartLite_SetRecvHandler(uart0, HandleUartRxFromIsr, nullptr);
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XUartLite_EnableInterrupt(uart0);
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}
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void SetupTimer() {
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NVIC_EnableIRQ(Timer0_IRQn);
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timer0->SetupAsWdt(100000 * 4000);
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timer0->EnableT1();
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}
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} // namespace
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async::task<buffer> UartRead(int size) {
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auto buff = buffer::make(size);
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auto* data = reinterpret_cast<uint8_t*>(buff.data.data());
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size_t received = XUartLite_Recv(uart0, data, buff.data.size());
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if (received < buff.data.size()) {
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co_await async::await(AwaitableType::kUartRx);
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}
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co_return buff;
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}
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async::task<> echo() {
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while (1) {
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buffer buff = co_await UartRead(1);
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UartSend(buff.data);
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}
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}
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int main() {
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SetupUart();
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SetupTimer();
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async::schedule(echo().h);
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async::main_loop([]() {
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static int cnt = 0;
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timer0->Pet();
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if ((cnt++ % 100000) == 0) {
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ToggleLed(0);
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}
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});
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// should never get here
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}
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