小模块例程：qspi_w25qxx - minichao9901/TangNano-20k-Zynq-7020 GitHub Wiki
zynq
- mb_zynq_periph_test
- 经过测试和翻阅手册，发现AXI QSPI这个IP，不支持QPI模式，只支持SPI/DSPI/QSPI模式
- 但不确定在XIP模式，是否支持QPI? 待测试。
- 测试过程发现了一个很奇特的事情：0x06与0x20指令，会间隔好几个ms；但是0x06与0x02或0x32指令之间，只有几十us。这可能是AXI QSPI硬件的行为，也就是page program之前的准备时间要很长
一些指令的定义
#define COMMAND_PAGE_PROGRAM 0x02 /* Page Program command */
#define COMMAND_QUAD_WRITE 0x32 /* Quad Input Fast Program */
#define COMMAND_RANDOM_READ 0x03 /* Random read command */
#define COMMAND_DUAL_READ 0x3B /* Dual Output Fast Read */
#define COMMAND_DUAL_IO_READ 0xBB /* Dual IO Fast Read */
#define COMMAND_QUAD_READ 0x6B /* Quad Output Fast Read */
#define COMMAND_QUAD_IO_READ 0xEB /* Quad IO Fast Read */
#define COMMAND_WRITE_ENABLE 0x06 /* Write Enable command */
#define COMMAND_SECTOR_ERASE 0xD8 /* Sector Erase command */
#define COMMAND_BULK_ERASE 0xC7 /* Bulk Erase command */
#define COMMAND_STATUSREG_READ 0x05 /* Status read command */
/**
* This definitions specify the EXTRA bytes in each of the command
* transactions. This count includes Command byte, address bytes and any
* don't care bytes needed.
*/
#define READ_WRITE_EXTRA_BYTES 4 /* Read/Write extra bytes */
#define WRITE_ENABLE_BYTES 1 /* Write Enable bytes */
#define SECTOR_ERASE_BYTES 4 /* Sector erase extra bytes */
#define BULK_ERASE_BYTES 1 /* Bulk erase extra bytes */
#define STATUS_READ_BYTES 2 /* Status read bytes count */
#define STATUS_WRITE_BYTES 2 /* Status write bytes count */
读写测试qspi flash的主程序
#include "COMMON.h"
typedef struct{
u8 txbuf[32];
u8 rxbuf[32];
u8 length;
}t_buf;
t_buf WriteBuffer[]={
//s1: read id
{{0x90},{0x00},6},
{{0x9f},{0x00},8},
{{0x4b},{0x00},13},
//s2: sector erase
{{0x06},{0x00},1},
{{0x20,0x00,0x00,0x10},{0x00},4},
{{0xff},{0x00},0}, //length=0 => delay_ms
//s3: page program
{{0x06},{0x00},1},
{{0x02,0x00,0x00,0x10,0x11,0x22,0x33,0x44,0x55,0x66,0x77,0x88},{0x00},12},
{{0xff},{0x00},0}, //length=0 => delay_ms
//s4: spi/dspi/qspi read
{{0x0b,0x00,0x00,0x10},{0x00},14},
{{0x3b,0x00,0x00,0x10},{0x00},14},
{{0x6b,0x00,0x00,0x10},{0x00},14},
//s5: sector erase
{{0x06},{0x00},1},
{{0x20,0x00,0x00,0x10},{0x00},4},
{{0xff},{0x00},0}, //length=0 => delay_ms
//s6: qspi program
{{0x06},{0x00},1},
{{0x32,0x00,0x00,0x10,0xaa,0xbb,0xcc,0xdd,0xee,0xff,0x11,0x22},{0x00},12},
{{0xff},{0x00},0}, //length=0 => delay_ms
//s7: qspi read
{{0x6b,0x00,0x00,0x10},{0x00},14},
{{0xbb,0x00,0x00,0x10},{0x00},14},
{{0xeb,0x00,0x00,0x10},{0x00},14},
//s8: enter qpi mode (QE=1), 貌似不支持
// {{0x38},{0x00},1}, //not support
// {{0x01,0x00,0x02},{0x00},3},
// {{0xA3,0x00,0x00,0x00},{0x00},4},
//
// //s9: sector erase
// {{0x06},{0x00},1},
// {{0x20,0x00,0x00,0x10},{0x00},4},
// {{0xff},{0x00},0}, //length=0 => delay_ms
//
// //s10: qpi read
// {{0x0b,0x00,0x00,0x10},{0x00},14},
//
// //s11: qpi program
// {{0x06},{0x00},1},
// {{0x02,0x00,0x00,0x10,0x88,0x77,0x66,0x55,0x44,0x33,0x22,0x11},{0x00},12},
// {{0xff},{0x00},0}, //length=0 => delay_ms
//
// //s12: qpi read
// {{0xbb,0x00,0x00,0x10},{0x00},14},
// {{0xeb,0x00,0x00,0x10},{0x00},14},
};
void print_buffer(u8 *pdata, int length)
{
for(int i=0; i<length; i++){
xil_printf("pdata[%d]=%x\r\n", i, pdata[i]);
}
xil_printf("********************\r\n");
}
int main(void)
{
//初始化通用中断控制器
ScuGic_Init();
//初始化AXI_SPI0，设为主机模式
AXI_SPI_Init(&AXI_SPI0, XPAR_SPI_1_DEVICE_ID, XSP_MASTER_OPTION);
//初始化私有定时器中断，定时间隔100ms
ScuTimer_Int_Init(100000);
for(int i=0; i<sizeof(WriteBuffer)/sizeof(*WriteBuffer); i++){
if(WriteBuffer[i].length==0){
usleep(WriteBuffer[i].txbuf[0]*1000);
continue;
}
AXI_SPI_Transfer(&AXI_SPI0, 0, WriteBuffer[i].rxbuf, WriteBuffer[i].txbuf, WriteBuffer[i].length);
xil_printf("Exec CMD=%x\r\n\r\n", WriteBuffer[i].txbuf[0]);
print_buffer(WriteBuffer[i].rxbuf, WriteBuffer[i].length);
}
while(1) {
//刷新间隔由私有定时器中断控制，中断服务函数在ISR.c中
if(Refresh_Flag) {
Refresh_Flag = 0;
//xil_printf("timer run!\r\n");
}
}
return 0;
}
附录
-
模块框图
-
引脚约束
#create_clock -period 20.000 -name sys_clk [get_ports sys_clk]
#set_property -dict {PACKAGE_PIN N18 IOSTANDARD LVCMOS33} [get_ports sys_clk]
#set_property -dict {PACKAGE_PIN P14 IOSTANDARD LVCMOS33} [get_ports sys_rst_n]
set_property -dict {PACKAGE_PIN H15 IOSTANDARD LVCMOS33} [get_ports uart_rxd]
set_property -dict {PACKAGE_PIN G15 IOSTANDARD LVCMOS33} [get_ports uart_txd]
set_property -dict {PACKAGE_PIN M19 IOSTANDARD LVCMOS33} [get_ports {key_tri_io[0]}]
set_property -dict {PACKAGE_PIN M20 IOSTANDARD LVCMOS33} [get_ports {key_tri_io[1]}]
set_property -dict {PACKAGE_PIN B20 IOSTANDARD LVCMOS33} [get_ports {led_tri_io[0]}]
set_property -dict {PACKAGE_PIN D20 IOSTANDARD LVCMOS33} [get_ports {led_tri_io[1]}]
set_property -dict {PACKAGE_PIN H18 IOSTANDARD LVCMOS33} [get_ports pwm]
#set_property -dict {PACKAGE_PIN F20 IOSTANDARD LVCMOS33} [get_ports {iic_gpio[0]}]
set_property -dict {PACKAGE_PIN E19 IOSTANDARD LVCMOS33} [get_ports i2c1_scl_io]
set_property -dict {PACKAGE_PIN G18 IOSTANDARD LVCMOS33} [get_ports i2c1_sda_io]
set_property -dict {PACKAGE_PIN P15 IOSTANDARD LVCMOS33} [get_ports i2c2_scl_io]
set_property -dict {PACKAGE_PIN P16 IOSTANDARD LVCMOS33} [get_ports i2c2_sda_io]
# for qspi w25qxx
set_property -dict {PACKAGE_PIN C20 IOSTANDARD LVCMOS33} [get_ports {qspi_ss_io[0]}]
set_property -dict {PACKAGE_PIN D19 IOSTANDARD LVCMOS33} [get_ports qspi_sck_io]
set_property -dict {PACKAGE_PIN J18 IOSTANDARD LVCMOS33} [get_ports qspi_io0_io]
set_property -dict {PACKAGE_PIN F19 IOSTANDARD LVCMOS33} [get_ports qspi_io1_io]
set_property -dict {PACKAGE_PIN G19 IOSTANDARD LVCMOS33} [get_ports qspi_io2_io]
set_property -dict {PACKAGE_PIN J20 IOSTANDARD LVCMOS33} [get_ports qspi_io3_io]
set_property SLEW FAST [get_ports qspi_io0_io]
set_property SLEW FAST [get_ports qspi_io1_io]
set_property SLEW FAST [get_ports qspi_io2_io]
set_property SLEW FAST [get_ports qspi_io3_io]
set_property SLEW FAST [get_ports qspi_sck_io]
set_property PULLUP true [get_ports i2c2_scl_io]
set_property PULLUP true [get_ports i2c2_sda_io]
# for my w25qxx
#set_property -dict {PACKAGE_PIN B19 IOSTANDARD LVCMOS33} [get_ports {spi_ss_io[0]}]
#set_property -dict {PACKAGE_PIN E18 IOSTANDARD LVCMOS33} [get_ports spi_sck_io]
#set_property -dict {PACKAGE_PIN E17 IOSTANDARD LVCMOS33} [get_ports spi_io0_io]
#set_property -dict {PACKAGE_PIN H16 IOSTANDARD LVCMOS33} [get_ports spi_io1_io]
#set_property SLEW FAST [get_ports spi_io0_io]
#set_property SLEW FAST [get_ports spi_io1_io]
#set_property SLEW FAST [get_ports spi_sck_io]
# for st7789
set_property -dict {PACKAGE_PIN V17 IOSTANDARD LVCMOS33} [get_ports {spi_ss_io[0]}]
set_property -dict {PACKAGE_PIN W18 IOSTANDARD LVCMOS33} [get_ports spi_sck_io]
set_property -dict {PACKAGE_PIN T16 IOSTANDARD LVCMOS33} [get_ports spi_io0_io]
set_property -dict {PACKAGE_PIN V16 IOSTANDARD LVCMOS33} [get_ports spi_io1_io]
set_property SLEW FAST [get_ports spi_io0_io]
set_property SLEW FAST [get_ports spi_io1_io]
set_property SLEW FAST [get_ports spi_sck_io]
set_property -dict {PACKAGE_PIN T17 IOSTANDARD LVCMOS33} [get_ports {spi_rst_dc_tri_io[0]}]
set_property -dict {PACKAGE_PIN R16 IOSTANDARD LVCMOS33} [get_ports {spi_rst_dc_tri_io[1]}]
测试结果
Exec CMD=90
pdata[0]=0
pdata[1]=0
pdata[2]=0
pdata[3]=0
pdata[4]=EF
pdata[5]=15
********************
Exec CMD=9F
pdata[0]=0
pdata[1]=EF
pdata[2]=40
pdata[3]=16
pdata[4]=0
pdata[5]=0
pdata[6]=0
pdata[7]=0
********************
Exec CMD=4B
pdata[0]=0
pdata[1]=0
pdata[2]=0
pdata[3]=0
pdata[4]=0
pdata[5]=DE
pdata[6]=67
pdata[7]=70
pdata[8]=D8
pdata[9]=7
pdata[10]=F
pdata[11]=33
pdata[12]=24
********************
Exec CMD=6
pdata[0]=0
********************
Exec CMD=20
pdata[0]=0
pdata[1]=0
pdata[2]=0
pdata[3]=0
********************
Exec CMD=6
pdata[0]=0
********************
Exec CMD=2
pdata[0]=0
pdata[1]=0
pdata[2]=0
pdata[3]=0
pdata[4]=0
pdata[5]=0
pdata[6]=0
pdata[7]=0
pdata[8]=0
pdata[9]=0
pdata[10]=0
pdata[11]=0
********************
Exec CMD=B
pdata[0]=0
pdata[1]=0
pdata[2]=0
pdata[3]=0
pdata[4]=0
pdata[5]=11
pdata[6]=22
pdata[7]=33
pdata[8]=44
pdata[9]=55
pdata[10]=66
pdata[11]=77
pdata[12]=88
pdata[13]=FF
********************
Exec CMD=3B
pdata[0]=0
pdata[1]=0
pdata[2]=0
pdata[3]=0
pdata[4]=0
pdata[5]=0
pdata[6]=11
pdata[7]=22
pdata[8]=33
pdata[9]=44
pdata[10]=55
pdata[11]=66
pdata[12]=77
pdata[13]=88
********************
Exec CMD=6B
pdata[0]=0
pdata[1]=0
pdata[2]=0
pdata[3]=C
pdata[4]=CC
pdata[5]=CC
pdata[6]=CC
pdata[7]=CC
pdata[8]=11
pdata[9]=22
pdata[10]=33
pdata[11]=44
pdata[12]=55
pdata[13]=66
********************
Exec CMD=6
pdata[0]=0
********************
Exec CMD=20
pdata[0]=0
pdata[1]=0
pdata[2]=0
pdata[3]=0
********************
Exec CMD=6
pdata[0]=0
********************
Exec CMD=32
pdata[0]=0
pdata[1]=0
pdata[2]=0
pdata[3]=C
pdata[4]=A
pdata[5]=B
pdata[6]=C
pdata[7]=D
pdata[8]=E
pdata[9]=F
pdata[10]=1
pdata[11]=2
********************
Exec CMD=6B
pdata[0]=0
pdata[1]=0
pdata[2]=0
pdata[3]=C
pdata[4]=CC
pdata[5]=CC
pdata[6]=CC
pdata[7]=CC
pdata[8]=AA
pdata[9]=BB
pdata[10]=CC
pdata[11]=DD
pdata[12]=EE
pdata[13]=FF
********************
Exec CMD=BB
pdata[0]=1
pdata[1]=0
pdata[2]=0
pdata[3]=10
pdata[4]=0
pdata[5]=AA
pdata[6]=BB
pdata[7]=CC
pdata[8]=DD
pdata[9]=EE
pdata[10]=FF
pdata[11]=11
pdata[12]=22
pdata[13]=FF
********************
Exec CMD=EB
pdata[0]=D
pdata[1]=0
pdata[2]=0
pdata[3]=10
pdata[4]=0
pdata[5]=CC
pdata[6]=CC
pdata[7]=AA
pdata[8]=BB
pdata[9]=CC
pdata[10]=DD
pdata[11]=EE
pdata[12]=FF
pdata[13]=11
********************
测试波形