46 lines
1.0 KiB
C
46 lines
1.0 KiB
C
#include "w5500.h"
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#include "ch32v003fun.h"
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static inline uint8_t SPI_is_RX_empty() { return SPI1->STATR & SPI_STATR_RXNE; }
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static inline void SPI_wait_not_busy() {
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while ((SPI1->STATR & SPI_STATR_BSY) != 0);
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}
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static inline uint8_t SPI_transfer(uint8_t data) {
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while (!(SPI1->STATR & SPI_STATR_TXE));
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// SPI_wait_not_busy();
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SPI1->DATAR = data;
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while (!(SPI1->STATR & SPI_STATR_RXNE));
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return SPI1->DATAR;
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}
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void W5500_Select(void) {
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GPIOA->BCR = (1 << 4); // Set PA4 (CS) low
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// Delay_Ms(2);
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}
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void W5500_Unselect(void) {
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GPIOA->BSHR = (1 << 4); // Set PA4 (CS) high
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// Delay_Ms(2);
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}
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uint8_t W5500_ReadByte() {
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return SPI_transfer(0xFF); // dummy byte to init read
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}
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void W5500_WriteByte(uint8_t byte) { SPI_transfer(byte); }
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void W5500_ReadBuff(uint8_t* buffer, uint16_t len) {
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for (uint16_t i = 0; i < len; i++) {
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buffer[i] = W5500_ReadByte();
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}
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}
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void W5500_WriteBuff(uint8_t* buffer, uint16_t len) {
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for (uint16_t i = 0; i < len; i++) {
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W5500_WriteByte(buffer[i]);
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}
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} |