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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> {
static constexpr auto is_v1 = std::is_same_v<T, STM32_UART_reg_v1_t>;
static constexpr auto is_v2 = std::is_same_v<T, STM32_UART_reg_v2_t>;
static constexpr auto is_lpv1 = std::is_same_v<T, STM32_UART_reg_lpv1_t>;
public:
using mmio_ptr<T>::ptr;
void write_blocking(uint8_t data) const requires is_v1 {
// wait for TXE/TXFNF
while (!(ptr()->SR & (1<<7)));
ptr()->DR = data;
}
void write_blocking(uint8_t data) const requires is_v2 || is_lpv1 {
// wait for TXE/TXFNF
while (!(ptr()->ISR & (1<<7)));
ptr()->TDR = data;
}
};
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