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@0:54f4cc3dfc0e, 2012-11-26 (annotated)

Committer:
okini3939
Date:
Mon Nov 26 03:14:24 2012 +0000
Revision:
0:54f4cc3dfc0e
Child:
1:a78f957bd042
1st build

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Who changed what in which revision?

UserRevisionLine numberNew contents of line
okini3939 0:54f4cc3dfc0e 1 /*
okini3939 0:54f4cc3dfc0e 2 * SPI FLASH AT45DB081D (Atmel)
okini3939 0:54f4cc3dfc0e 3 * 8Mbit
okini3939 0:54f4cc3dfc0e 4 */
okini3939 0:54f4cc3dfc0e 5 #include "mbed.h"
okini3939 0:54f4cc3dfc0e 6 #include "at45db161d.h"
okini3939 0:54f4cc3dfc0e 7
okini3939 0:54f4cc3dfc0e 8 #undef PAGE_SIZE
okini3939 0:54f4cc3dfc0e 9 #define PAGE_SIZE 264 // AT45DB081D (1MB)
okini3939 0:54f4cc3dfc0e 10 //#define PAGE_SIZE 528 // AT45DB321D (4MB)
okini3939 0:54f4cc3dfc0e 11 #define PAGE_NUM 4095 // AT45DB081D (1MB)
okini3939 0:54f4cc3dfc0e 12 //#define PAGE_NUM 8192 // AT45DB321D (4MB)
okini3939 0:54f4cc3dfc0e 13
okini3939 0:54f4cc3dfc0e 14 #define WRITE_BUFFER 1
okini3939 0:54f4cc3dfc0e 15 #define READ_BUFFER 2
okini3939 0:54f4cc3dfc0e 16
okini3939 0:54f4cc3dfc0e 17 DigitalOut myled(LED1);
okini3939 0:54f4cc3dfc0e 18 Serial pc(USBTX, USBRX);
okini3939 0:54f4cc3dfc0e 19
okini3939 0:54f4cc3dfc0e 20 SPI spi(p11, p12, p13); // mosi, miso, sclk
okini3939 0:54f4cc3dfc0e 21 ATD45DB161D memory(spi, p19);
okini3939 0:54f4cc3dfc0e 22
okini3939 0:54f4cc3dfc0e 23 void flash_write (int addr, char *buf, int len) {
okini3939 0:54f4cc3dfc0e 24 int i;
okini3939 0:54f4cc3dfc0e 25 memory.BufferWrite(WRITE_BUFFER, addr % PAGE_SIZE);
okini3939 0:54f4cc3dfc0e 26 for (i = 0; i < len; i ++) {
okini3939 0:54f4cc3dfc0e 27 spi.write(buf[i]);
okini3939 0:54f4cc3dfc0e 28 }
okini3939 0:54f4cc3dfc0e 29 memory.BufferToPage(WRITE_BUFFER, addr / PAGE_SIZE, 1);
okini3939 0:54f4cc3dfc0e 30 }
okini3939 0:54f4cc3dfc0e 31
okini3939 0:54f4cc3dfc0e 32 void flash_read (int addr, char *buf, int len) {
okini3939 0:54f4cc3dfc0e 33 int i;
okini3939 0:54f4cc3dfc0e 34 memory.PageToBuffer(addr / PAGE_SIZE, READ_BUFFER);
okini3939 0:54f4cc3dfc0e 35 memory.BufferRead(READ_BUFFER, addr % PAGE_SIZE, 1);
okini3939 0:54f4cc3dfc0e 36 for (i = 0; i < len; i ++) {
okini3939 0:54f4cc3dfc0e 37 buf[i] = spi.write(0xff);
okini3939 0:54f4cc3dfc0e 38 }
okini3939 0:54f4cc3dfc0e 39 }
okini3939 0:54f4cc3dfc0e 40
okini3939 0:54f4cc3dfc0e 41 int main() {
okini3939 0:54f4cc3dfc0e 42 int i;
okini3939 0:54f4cc3dfc0e 43 char buf[PAGE_SIZE];
okini3939 0:54f4cc3dfc0e 44 Timer t;
okini3939 0:54f4cc3dfc0e 45 ATD45DB161D::ID id;
okini3939 0:54f4cc3dfc0e 46
okini3939 0:54f4cc3dfc0e 47 pc.baud(115200);
okini3939 0:54f4cc3dfc0e 48 spi.frequency(16000000);
okini3939 0:54f4cc3dfc0e 49 wait_ms(500);
okini3939 0:54f4cc3dfc0e 50
okini3939 0:54f4cc3dfc0e 51 memory.ReadManufacturerAndDeviceID(&id);
okini3939 0:54f4cc3dfc0e 52 printf("RAM Manufacturer ID : %02x\r\n", id.manufacturer);
okini3939 0:54f4cc3dfc0e 53 printf("RAM Device ID : %02x %02x\r\n", id.device[0], id.device[1]);
okini3939 0:54f4cc3dfc0e 54 wait_ms(10);
okini3939 0:54f4cc3dfc0e 55
okini3939 0:54f4cc3dfc0e 56 printf("\r\nHELLO test\r\n");
okini3939 0:54f4cc3dfc0e 57
okini3939 0:54f4cc3dfc0e 58 printf("RAM write\r\n");
okini3939 0:54f4cc3dfc0e 59 strcpy(buf, "Hello!");
okini3939 0:54f4cc3dfc0e 60 flash_write(0, buf, 6);
okini3939 0:54f4cc3dfc0e 61
okini3939 0:54f4cc3dfc0e 62 for (i = 0; i < PAGE_SIZE; i ++) {
okini3939 0:54f4cc3dfc0e 63 buf[i] = i;
okini3939 0:54f4cc3dfc0e 64 }
okini3939 0:54f4cc3dfc0e 65 flash_write(6, buf, PAGE_SIZE - 6);
okini3939 0:54f4cc3dfc0e 66
okini3939 0:54f4cc3dfc0e 67 wait(1);
okini3939 0:54f4cc3dfc0e 68 memset(buf, 0, PAGE_SIZE);
okini3939 0:54f4cc3dfc0e 69
okini3939 0:54f4cc3dfc0e 70 printf("RAM read\r\n");
okini3939 0:54f4cc3dfc0e 71 flash_read(0, buf, PAGE_SIZE);
okini3939 0:54f4cc3dfc0e 72 for (i = 0; i < PAGE_SIZE; i ++) {
okini3939 0:54f4cc3dfc0e 73 printf(" %02x", buf[i]);
okini3939 0:54f4cc3dfc0e 74 if ((i & 0x0f) == 0x0f)
okini3939 0:54f4cc3dfc0e 75 printf("\r\n");
okini3939 0:54f4cc3dfc0e 76 }
okini3939 0:54f4cc3dfc0e 77
okini3939 0:54f4cc3dfc0e 78 wait(1);
okini3939 0:54f4cc3dfc0e 79
okini3939 0:54f4cc3dfc0e 80 printf("\r\nWrite/Read time\r\n");
okini3939 0:54f4cc3dfc0e 81
okini3939 0:54f4cc3dfc0e 82 printf("RAM write\r\n");
okini3939 0:54f4cc3dfc0e 83 t.reset();
okini3939 0:54f4cc3dfc0e 84 t.start();
okini3939 0:54f4cc3dfc0e 85 for (i = 0; i < 0x20000; i += PAGE_SIZE) {
okini3939 0:54f4cc3dfc0e 86 buf[0] = (i >> 8) & 0xff;
okini3939 0:54f4cc3dfc0e 87 flash_write(i, buf, PAGE_SIZE);
okini3939 0:54f4cc3dfc0e 88 if ((i & 0x0fff) == 0) printf(".");
okini3939 0:54f4cc3dfc0e 89 }
okini3939 0:54f4cc3dfc0e 90 t.stop();
okini3939 0:54f4cc3dfc0e 91 printf("\r\ntime %f, %f KBytes/sec\r\n", t.read(), (float)0x20000 / 1024 / t.read());
okini3939 0:54f4cc3dfc0e 92
okini3939 0:54f4cc3dfc0e 93 wait(1);
okini3939 0:54f4cc3dfc0e 94
okini3939 0:54f4cc3dfc0e 95 printf("RAM read\r\n");
okini3939 0:54f4cc3dfc0e 96 t.reset();
okini3939 0:54f4cc3dfc0e 97 t.start();
okini3939 0:54f4cc3dfc0e 98 for (i = 0; i < 0x20000; i += PAGE_SIZE) {
okini3939 0:54f4cc3dfc0e 99 flash_read(i, buf, PAGE_SIZE);
okini3939 0:54f4cc3dfc0e 100 if (buf[0] != ((i >> 8) & 0xff)) {
okini3939 0:54f4cc3dfc0e 101 printf("error %d\r\n", i);
okini3939 0:54f4cc3dfc0e 102 break;
okini3939 0:54f4cc3dfc0e 103 }
okini3939 0:54f4cc3dfc0e 104 if ((i & 0x0fff) == 0) printf(".");
okini3939 0:54f4cc3dfc0e 105 }
okini3939 0:54f4cc3dfc0e 106 t.stop();
okini3939 0:54f4cc3dfc0e 107 printf("\r\ntime %f, %f KBytes/sec\r\n", t.read(), 0x20000 / 1024 / t.read());
okini3939 0:54f4cc3dfc0e 108
okini3939 0:54f4cc3dfc0e 109 }