nikos chalikias / Mbed 2 deprecated n-bed_AT45DB161E

testing n-Bed SPI flash

Dependencies:   at45db161d mbed

Fork of SPIFLASH_AT45DB by Suga koubou

main.cpp@1:a78f957bd042, 2015-01-23 (annotated)

Committer:
chalikias
Date:
Fri Jan 23 09:41:37 2015 +0000
Revision:
1:a78f957bd042
Parent:
0:54f4cc3dfc0e 
n-bed related comments

Who changed what in which revision?

UserRevisionLine numberNew contents of line
chalikias 1:a78f957bd042 1 // N.C. n-bed test AT45DB161E
chalikias 1:a78f957bd042 2 // PAGE_SIZE 512, PAGE_NUM 8192
chalikias 1:a78f957bd042 3
chalikias 1:a78f957bd042 4
chalikias 1:a78f957bd042 5
okini3939 0:54f4cc3dfc0e 6 /*
okini3939 0:54f4cc3dfc0e 7 * SPI FLASH AT45DB081D (Atmel)
okini3939 0:54f4cc3dfc0e 8 * 8Mbit
okini3939 0:54f4cc3dfc0e 9 */
okini3939 0:54f4cc3dfc0e 10 #include "mbed.h"
okini3939 0:54f4cc3dfc0e 11 #include "at45db161d.h"
okini3939 0:54f4cc3dfc0e 12
okini3939 0:54f4cc3dfc0e 13 #undef PAGE_SIZE
chalikias 1:a78f957bd042 14 //#define PAGE_SIZE 264 // AT45DB081D (1MB)
chalikias 1:a78f957bd042 15 #define PAGE_SIZE 512 // AT45DB081D (1MB) N.C.
okini3939 0:54f4cc3dfc0e 16 //#define PAGE_SIZE 528 // AT45DB321D (4MB)
okini3939 0:54f4cc3dfc0e 17 #define PAGE_NUM 4095 // AT45DB081D (1MB)
okini3939 0:54f4cc3dfc0e 18 //#define PAGE_NUM 8192 // AT45DB321D (4MB)
okini3939 0:54f4cc3dfc0e 19
okini3939 0:54f4cc3dfc0e 20 #define WRITE_BUFFER 1
okini3939 0:54f4cc3dfc0e 21 #define READ_BUFFER 2
okini3939 0:54f4cc3dfc0e 22
okini3939 0:54f4cc3dfc0e 23 DigitalOut myled(LED1);
okini3939 0:54f4cc3dfc0e 24 Serial pc(USBTX, USBRX);
okini3939 0:54f4cc3dfc0e 25
okini3939 0:54f4cc3dfc0e 26 SPI spi(p11, p12, p13); // mosi, miso, sclk
chalikias 1:a78f957bd042 27 ATD45DB161D memory(spi, p14);
okini3939 0:54f4cc3dfc0e 28
okini3939 0:54f4cc3dfc0e 29 void flash_write (int addr, char *buf, int len) {
okini3939 0:54f4cc3dfc0e 30 int i;
okini3939 0:54f4cc3dfc0e 31 memory.BufferWrite(WRITE_BUFFER, addr % PAGE_SIZE);
okini3939 0:54f4cc3dfc0e 32 for (i = 0; i < len; i ++) {
okini3939 0:54f4cc3dfc0e 33 spi.write(buf[i]);
okini3939 0:54f4cc3dfc0e 34 }
okini3939 0:54f4cc3dfc0e 35 memory.BufferToPage(WRITE_BUFFER, addr / PAGE_SIZE, 1);
okini3939 0:54f4cc3dfc0e 36 }
okini3939 0:54f4cc3dfc0e 37
okini3939 0:54f4cc3dfc0e 38 void flash_read (int addr, char *buf, int len) {
okini3939 0:54f4cc3dfc0e 39 int i;
okini3939 0:54f4cc3dfc0e 40 memory.PageToBuffer(addr / PAGE_SIZE, READ_BUFFER);
okini3939 0:54f4cc3dfc0e 41 memory.BufferRead(READ_BUFFER, addr % PAGE_SIZE, 1);
okini3939 0:54f4cc3dfc0e 42 for (i = 0; i < len; i ++) {
okini3939 0:54f4cc3dfc0e 43 buf[i] = spi.write(0xff);
okini3939 0:54f4cc3dfc0e 44 }
okini3939 0:54f4cc3dfc0e 45 }
okini3939 0:54f4cc3dfc0e 46
okini3939 0:54f4cc3dfc0e 47 int main() {
okini3939 0:54f4cc3dfc0e 48 int i;
okini3939 0:54f4cc3dfc0e 49 char buf[PAGE_SIZE];
okini3939 0:54f4cc3dfc0e 50 Timer t;
okini3939 0:54f4cc3dfc0e 51 ATD45DB161D::ID id;
okini3939 0:54f4cc3dfc0e 52
chalikias 1:a78f957bd042 53 //pc.baud(115200);
okini3939 0:54f4cc3dfc0e 54 spi.frequency(16000000);
okini3939 0:54f4cc3dfc0e 55 wait_ms(500);
okini3939 0:54f4cc3dfc0e 56
okini3939 0:54f4cc3dfc0e 57 memory.ReadManufacturerAndDeviceID(&id);
okini3939 0:54f4cc3dfc0e 58 printf("RAM Manufacturer ID : %02x\r\n", id.manufacturer);
okini3939 0:54f4cc3dfc0e 59 printf("RAM Device ID : %02x %02x\r\n", id.device[0], id.device[1]);
okini3939 0:54f4cc3dfc0e 60 wait_ms(10);
okini3939 0:54f4cc3dfc0e 61
okini3939 0:54f4cc3dfc0e 62 printf("\r\nHELLO test\r\n");
okini3939 0:54f4cc3dfc0e 63
okini3939 0:54f4cc3dfc0e 64 printf("RAM write\r\n");
okini3939 0:54f4cc3dfc0e 65 strcpy(buf, "Hello!");
okini3939 0:54f4cc3dfc0e 66 flash_write(0, buf, 6);
okini3939 0:54f4cc3dfc0e 67
okini3939 0:54f4cc3dfc0e 68 for (i = 0; i < PAGE_SIZE; i ++) {
okini3939 0:54f4cc3dfc0e 69 buf[i] = i;
okini3939 0:54f4cc3dfc0e 70 }
okini3939 0:54f4cc3dfc0e 71 flash_write(6, buf, PAGE_SIZE - 6);
okini3939 0:54f4cc3dfc0e 72
okini3939 0:54f4cc3dfc0e 73 wait(1);
okini3939 0:54f4cc3dfc0e 74 memset(buf, 0, PAGE_SIZE);
okini3939 0:54f4cc3dfc0e 75
okini3939 0:54f4cc3dfc0e 76 printf("RAM read\r\n");
okini3939 0:54f4cc3dfc0e 77 flash_read(0, buf, PAGE_SIZE);
okini3939 0:54f4cc3dfc0e 78 for (i = 0; i < PAGE_SIZE; i ++) {
okini3939 0:54f4cc3dfc0e 79 printf(" %02x", buf[i]);
okini3939 0:54f4cc3dfc0e 80 if ((i & 0x0f) == 0x0f)
okini3939 0:54f4cc3dfc0e 81 printf("\r\n");
okini3939 0:54f4cc3dfc0e 82 }
okini3939 0:54f4cc3dfc0e 83
okini3939 0:54f4cc3dfc0e 84 wait(1);
okini3939 0:54f4cc3dfc0e 85
okini3939 0:54f4cc3dfc0e 86 printf("\r\nWrite/Read time\r\n");
okini3939 0:54f4cc3dfc0e 87
okini3939 0:54f4cc3dfc0e 88 printf("RAM write\r\n");
okini3939 0:54f4cc3dfc0e 89 t.reset();
okini3939 0:54f4cc3dfc0e 90 t.start();
okini3939 0:54f4cc3dfc0e 91 for (i = 0; i < 0x20000; i += PAGE_SIZE) {
okini3939 0:54f4cc3dfc0e 92 buf[0] = (i >> 8) & 0xff;
okini3939 0:54f4cc3dfc0e 93 flash_write(i, buf, PAGE_SIZE);
okini3939 0:54f4cc3dfc0e 94 if ((i & 0x0fff) == 0) printf(".");
okini3939 0:54f4cc3dfc0e 95 }
okini3939 0:54f4cc3dfc0e 96 t.stop();
okini3939 0:54f4cc3dfc0e 97 printf("\r\ntime %f, %f KBytes/sec\r\n", t.read(), (float)0x20000 / 1024 / t.read());
okini3939 0:54f4cc3dfc0e 98
okini3939 0:54f4cc3dfc0e 99 wait(1);
okini3939 0:54f4cc3dfc0e 100
okini3939 0:54f4cc3dfc0e 101 printf("RAM read\r\n");
okini3939 0:54f4cc3dfc0e 102 t.reset();
okini3939 0:54f4cc3dfc0e 103 t.start();
okini3939 0:54f4cc3dfc0e 104 for (i = 0; i < 0x20000; i += PAGE_SIZE) {
okini3939 0:54f4cc3dfc0e 105 flash_read(i, buf, PAGE_SIZE);
okini3939 0:54f4cc3dfc0e 106 if (buf[0] != ((i >> 8) & 0xff)) {
okini3939 0:54f4cc3dfc0e 107 printf("error %d\r\n", i);
okini3939 0:54f4cc3dfc0e 108 break;
okini3939 0:54f4cc3dfc0e 109 }
okini3939 0:54f4cc3dfc0e 110 if ((i & 0x0fff) == 0) printf(".");
okini3939 0:54f4cc3dfc0e 111 }
okini3939 0:54f4cc3dfc0e 112 t.stop();
okini3939 0:54f4cc3dfc0e 113 printf("\r\ntime %f, %f KBytes/sec\r\n", t.read(), 0x20000 / 1024 / t.read());
okini3939 0:54f4cc3dfc0e 114
okini3939 0:54f4cc3dfc0e 115 }