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#ifndef USART_H
#define USART_H
#include <rcc/rcc.h>
#include <interrupt/interrupt.h>
#include <os/thread.h>
#if defined(STM32F1) || defined(STM32F4)
struct USART_reg_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;
};
#elif defined(STM32F3) || defined(STM32L0)
struct USART_reg_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;
};
#endif
class USART_t {
public:
USART_reg_t& reg;
const uint32_t clk;
USART_t(uint32_t reg_addr, uint32_t bus_clk) : reg(*(USART_reg_t*)reg_addr), clk(bus_clk) {}
inline void set_baudrate(uint32_t baudrate) {
reg.BRR = clk / baudrate;
}
};
#if defined(STM32F1) || defined(STM32F3)
static USART_t USART1(0x40013800, 72000000);
static USART_t USART2(0x40004400, 36000000);
static USART_t USART3(0x40004800, 36000000);
#elif defined(STM32F4)
static USART_t USART1(0x40011000, 84000000);
static USART_t USART2(0x40004400, 42000000);
static USART_t USART3(0x40004800, 42000000);
#elif defined(STM32L0)
static USART_t USART1(0x40013800, 32000000);
static USART_t USART2(0x40004400, 32000000);
#endif
#endif
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