nand.h

来自「HID-Ukey底层源码实现（st72651芯片） windows上层驱动」· C头文件 代码 · 共 11 行

#define MAX_NUM_NAND	1

// Select one chip and disable all the other chips!!
#define SELECT_NAND0 	{ PDDR &= ~0x01; PDDR |= 0x02; PDDR |= 0x04; PDDR |= 0x08; }
#define SELECT_NAND1	{ PDDR |= 0x01; PDDR &= ~0x02; PDDR |= 0x04; PDDR |= 0x08; }
#define SELECT_NAND2	{ PDDR |= 0x01; PDDR |= 0x02; PDDR &= ~0x04; PDDR |= 0x08; }
#define SELECT_NAND3	{ PDDR |= 0x01; PDDR |= 0x02; PDDR |= 0x04; PDDR &= ~0x08; }

#define DESELECT_NAND { PDDR |= 0x0F; }