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#pragma once
#include <mmio/mmio.h>
#include <type_traits>
struct STM32_UART_reg_v1_t {
volatile uint32_t SR;
volatile uint32_t DR;
volatile uint32_t BRR;
volatile uint32_t CR1;
volatile uint32_t CR2;
volatile uint32_t CR3;
volatile uint32_t GTPR;
};
struct STM32_UART_reg_v2_t {
volatile uint32_t CR1;
volatile uint32_t CR2;
volatile uint32_t CR3;
volatile uint32_t BRR;
volatile uint32_t GTPR;
volatile uint32_t RTOR;
volatile uint32_t RQR;
volatile uint32_t ISR;
volatile uint32_t ICR;
volatile uint32_t RDR;
volatile uint32_t TDR;
volatile uint32_t PRESC; // Gx, L4+, Wx etc
};
struct STM32_UART_reg_lpv1_t {
volatile uint32_t CR1;
volatile uint32_t CR2;
volatile uint32_t CR3;
volatile uint32_t BRR;
uint32_t _1[2];
volatile uint32_t RQR;
volatile uint32_t ISR;
volatile uint32_t ICR;
volatile uint32_t RDR;
volatile uint32_t TDR;
};
template <typename T>
class STM32_UART_t : public mmio_ptr<T> {
public:
using mmio_ptr<T>::ptr;
bool txe() const {
if constexpr (std::is_same_v<T, STM32_UART_reg_v1_t>) {
return ptr()->SR & (1 << 7);
} else {
return ptr()->ISR & (1 << 7);
}
}
bool rxne() const {
if constexpr (std::is_same_v<T, STM32_UART_reg_v1_t>) {
return ptr()->SR & (1 << 5);
} else {
return ptr()->ISR & (1 << 5);
}
}
uint8_t read() const {
if constexpr (std::is_same_v<T, STM32_UART_reg_v1_t>) {
return ptr()->DR;
} else {
return ptr()->RDR;
}
}
void write(uint8_t data) const {
if constexpr (std::is_same_v<T, STM32_UART_reg_v1_t>) {
ptr()->DR = data;
} else {
ptr()->TDR = data;
}
}
uint8_t read_blocking() const {
while(!rxne());
return read();
}
void write_blocking(uint8_t data) const {
while(!txe());
write(data);
}
};
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