//芯片写
static int w25qxx_write_sr(uint8_t value)
{
w25qxx_write_enable();
spi_xfer(W25X_WriteStatusReg, W25QXX_CS_LOW);
spi_xfer(value, W25QXX_CS_HIGH);
return 0;
}
//芯片写
static int w25qxx_write_sr(uint8_t value)
{
uint8_t buf[2];
buf[0] = W25X_WriteStatusReg;
buf[1] = value;
w25qxx_write_enable();
spi_write(&device, buf, 2, true);
return SPI_EOK;
}
//擦除整个芯片
int w25qxx_erase_chip(void)
{
uint8_t buf_send[1];
w25qxx_write_enable();
while((w25qxx_read_sr() & 0x01) == 0x01);
buf_send[0] = W25X_ChipErase;
spi_write(&device, buf_send, sizeof(buf_send), true);
while((w25qxx_read_sr() & 0x01) == 0x01);
return SPI_EOK;
}
//擦除整个芯片
int w25qxx_erase_chip(void)
{
w25qxx_write_enable();
while((w25qxx_read_sr() & 0x01) == 0x01);
spi_xfer(W25X_ChipErase, W25QXX_CS_HIGH);
while((w25qxx_read_sr() & 0x01) == 0x01)
{
w25_dev.ops.delayms(10);
}
return 0;
}
//擦除扇区
static int w25qxx_erase_sector(uint32_t addr)
{
uint8_t buf_send[4];
addr /= W25X_SECTOR_SIZE;
addr *= W25X_SECTOR_SIZE; //round addr to N x W25X_SECTOR_SIZE
buf_send[0] = W25X_SectorErase;
buf_send[1] = (uint8_t)((addr)>>16);
buf_send[2] = (uint8_t)((addr)>>8);
buf_send[3] = (uint8_t)addr;
w25qxx_write_enable();
while((w25qxx_read_sr() & 0x01) == 0x01);
spi_write(&device, buf_send, sizeof(buf_send), true);
while((w25qxx_read_sr() & 0x01) == 0x01);
return SPI_EOK;
}
//写一页数据
static int w25qxx_write_page(uint32_t addr, uint8_t *buf, uint32_t len)
{
uint8_t buf_send[4];
w25qxx_write_enable();
buf_send[0] = W25X_PageProgram;
buf_send[1] = (uint8_t)((addr)>>16);
buf_send[2] = (uint8_t)((addr)>>8);
buf_send[3] = (uint8_t)addr;
if(spi_write(&device, buf_send, sizeof(buf_send), false))
{
return SPI_ERROR;
}
spi_write(&device, buf, len, true);
/* wait busy */
while((w25qxx_read_sr() & 0x01) == 0x01);
return SPI_EOK;
}
//擦除扇区
int w25qxx_erase_sector(uint32_t addr)
{
addr /= w25_dev.attr.sector_size;
addr *= w25_dev.attr.sector_size; //round addr to N x W25X_SECTOR_SIZE
w25qxx_write_enable();
while((w25qxx_read_sr() & 0x01) == 0x01);
spi_xfer(W25X_SectorErase, W25QXX_CS_LOW);
spi_xfer((uint8_t)((addr)>>16), W25QXX_CS_LOW);
spi_xfer((uint8_t)((addr)>>8), W25QXX_CS_LOW);
spi_xfer((uint8_t)addr, W25QXX_CS_HIGH);
while((w25qxx_read_sr() & 0x01) == 0x01)
{
w25_dev.ops.delayms(10);
}
return 0;
}
void w25qxx_enter_qspi_mode(struct rt_qspi_device *device)
{
char status = 0;
/* 0x38 enter qspi mode */
char instruction = 0x38;
char write_status2_buf[2] = {0};
/* 0x31 write status register2 */
write_status2_buf[0] = 0x31;
status = w25qxx_read_status_register2(device);
if (!(status & 0x02))
{
status |= 1 << 1;
w25qxx_write_enable(device);
write_status2_buf[1] = status;
rt_qspi_send(device, &write_status2_buf, 2);
rt_qspi_send(device, &instruction, 1);
rt_kprintf("flash already enter qspi mode\n");
rt_thread_mdelay(10);
}
}
//写一页数据
int w25qxx_write_page(uint32_t addr, uint8_t *buf, uint32_t len)
{
w25qxx_write_enable();
/* send addr */
spi_xfer(W25X_PageProgram, W25QXX_CS_LOW);
spi_xfer((uint8_t)((addr)>>16), W25QXX_CS_LOW);
spi_xfer((uint8_t)((addr)>>8), W25QXX_CS_LOW);
spi_xfer((uint8_t)addr, W25QXX_CS_LOW);
w25_dev.ops.xfer(NULL, buf, len, W25QXX_CS_HIGH);
while(w25_dev.ops.get_reamin() != 0)
{
w25_dev.ops.delayms(10);
}
/* wait busy */
while((w25qxx_read_sr() & 0x01) == 0x01)
{
w25_dev.ops.delayms(1);
}
return 0;
}
