43 lines
918 B
C
43 lines
918 B
C
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#ifndef UART_H_
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#define UART_H_
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typedef struct
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{
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volatile uint32_t DATA;
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volatile uint32_t STATUS;
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volatile uint32_t CLOCK_DIVIDER;
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volatile uint32_t FRAME_CONFIG;
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} Uart_Reg;
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enum UartParity {NONE = 0,EVEN = 1,ODD = 2};
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enum UartStop {ONE = 0,TWO = 1};
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typedef struct {
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uint32_t dataLength;
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enum UartParity parity;
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enum UartStop stop;
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uint32_t clockDivider;
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} Uart_Config;
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static uint32_t uart_writeAvailability(Uart_Reg *reg){
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return (reg->STATUS >> 16) & 0xFF;
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}
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static uint32_t uart_readOccupancy(Uart_Reg *reg){
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return reg->STATUS >> 24;
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}
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static void uart_write(Uart_Reg *reg, uint32_t data){
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while(uart_writeAvailability(reg) == 0);
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reg->DATA = data;
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}
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static void uart_applyConfig(Uart_Reg *reg, Uart_Config *config){
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reg->CLOCK_DIVIDER = config->clockDivider;
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reg->FRAME_CONFIG = ((config->dataLength-1) << 0) | (config->parity << 8) | (config->stop << 16);
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}
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#endif /* UART_H_ */
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