CUBEBITE / Mbed 2 deprecated 161006_BDK_EEPROM_SPI_Slave

161010_bug fix multi byte read

Dependencies:   mbed

Fork of 161006_BDK_EEPROM by CUBEBITE

main.cpp@2:5311ad7c83e6, 2016-10-05 (annotated)

Committer:
bcup
Date:
Wed Oct 05 07:09:51 2016 +0000
Revision:
2:5311ad7c83e6
Parent:
1:3a338e553a54
Child:
3:4bb95aa46ebc
fgf

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bcup 0:24e90e3ca3f4 1 #include "mbed.h"
bcup 0:24e90e3ca3f4 2
bcup 0:24e90e3ca3f4 3 #define DEBUG_SPI
bcup 0:24e90e3ca3f4 4
bcup 0:24e90e3ca3f4 5 #ifdef DEBUG_SPI
bcup 0:24e90e3ca3f4 6 #define PRINTD(arg1,arg2...) printf(arg1,##arg2)
bcup 0:24e90e3ca3f4 7 #endif
bcup 0:24e90e3ca3f4 8
bcup 2:5311ad7c83e6 9 SPISlave spislave(PA_7, PA_6, PA_5, PA_4); // MOSI, MISO, SCLK(CLK), SSEL(CS)=NC
bcup 2:5311ad7c83e6 10 Serial pc(USBTX, USBRX);
bcup 0:24e90e3ca3f4 11
bcup 2:5311ad7c83e6 12 void SPI_SlaveInit()
bcup 0:24e90e3ca3f4 13 {
bcup 2:5311ad7c83e6 14 PRINTD("Set the SPI SLAVE format\n");
bcup 2:5311ad7c83e6 15 spislave.format(8,0); // setup 8bit 0 mode
bcup 2:5311ad7c83e6 16 PRINTD("Set the SPI SLAVE frequency\n");
bcup 2:5311ad7c83e6 17 spislave.frequency(); // default 1MHz
bcup 0:24e90e3ca3f4 18 }
bcup 0:24e90e3ca3f4 19
bcup 2:5311ad7c83e6 20 void SPI_SlaveWrite()
bcup 0:24e90e3ca3f4 21 {
bcup 2:5311ad7c83e6 22 char tx_buffer[255]={0};
bcup 2:5311ad7c83e6 23 char reply;
bcup 2:5311ad7c83e6 24 char i;
bcup 1:3a338e553a54 25 char temp;
bcup 2:5311ad7c83e6 26 char tx_cnt = 0;
bcup 2:5311ad7c83e6 27 int value;
bcup 2:5311ad7c83e6 28 PRINTD("Input Strging=");
bcup 0:24e90e3ca3f4 29 while(1)
bcup 0:24e90e3ca3f4 30 {
bcup 0:24e90e3ca3f4 31
bcup 0:24e90e3ca3f4 32 temp=getchar();
bcup 2:5311ad7c83e6 33 tx_buffer[tx_cnt++]=temp;
bcup 0:24e90e3ca3f4 34 if(temp==0x0d)
bcup 0:24e90e3ca3f4 35 {
bcup 0:24e90e3ca3f4 36 tx_buffer[tx_cnt]=0;
bcup 0:24e90e3ca3f4 37 PRINTD("\nData send Finish...\n");
bcup 0:24e90e3ca3f4 38 for(i=0;i<=tx_cnt;++i)
bcup 0:24e90e3ca3f4 39 {
bcup 0:24e90e3ca3f4 40 PRINTD("%c[%02x]",tx_buffer[i],tx_buffer[i]);
bcup 0:24e90e3ca3f4 41 }
bcup 0:24e90e3ca3f4 42 PRINTD("\n\n");
bcup 0:24e90e3ca3f4 43 for(i=0;i<=tx_cnt;++i)
bcup 0:24e90e3ca3f4 44 {
bcup 0:24e90e3ca3f4 45 value=tx_buffer[i];
bcup 2:5311ad7c83e6 46 PRINTD("write[%d]=%c[%02x]\n",i,value,value);
bcup 2:5311ad7c83e6 47 spislave.reply(value);
bcup 0:24e90e3ca3f4 48 }
bcup 2:5311ad7c83e6 49 for(i=0;i<tx_cnt;++i)
bcup 0:24e90e3ca3f4 50 {
bcup 0:24e90e3ca3f4 51 tx_buffer[i]=0;
bcup 2:5311ad7c83e6 52 PRINTD("init_tx_buf[%d]=%c\n",i,tx_buffer[i]);
bcup 0:24e90e3ca3f4 53 }
bcup 2:5311ad7c83e6 54 tx_cnt=0;
bcup 2:5311ad7c83e6 55 PRINTD("break\n");
bcup 2:5311ad7c83e6 56 break;
bcup 0:24e90e3ca3f4 57 }
bcup 0:24e90e3ca3f4 58 else
bcup 0:24e90e3ca3f4 59 {
bcup 0:24e90e3ca3f4 60 PRINTD("%c[%02x]",tx_buffer[tx_cnt],tx_buffer[tx_cnt]);
bcup 0:24e90e3ca3f4 61 }
bcup 0:24e90e3ca3f4 62 }
bcup 2:5311ad7c83e6 63 return;
bcup 0:24e90e3ca3f4 64 }
bcup 0:24e90e3ca3f4 65
bcup 0:24e90e3ca3f4 66 int main()
bcup 0:24e90e3ca3f4 67 {
bcup 2:5311ad7c83e6 68 int i;
bcup 2:5311ad7c83e6 69 char valueFromMaster;
bcup 2:5311ad7c83e6 70 char rx_buffer[255]={0};
bcup 2:5311ad7c83e6 71 char rx_cnt = -1;
bcup 2:5311ad7c83e6 72 PRINTD("\n=========SLAVE=========\n");
bcup 2:5311ad7c83e6 73 SPI_SlaveInit();
bcup 2:5311ad7c83e6 74
bcup 0:24e90e3ca3f4 75 while(1)
bcup 0:24e90e3ca3f4 76 {
bcup 2:5311ad7c83e6 77
bcup 2:5311ad7c83e6 78 if(spislave.receive())
bcup 2:5311ad7c83e6 79 {
bcup 2:5311ad7c83e6 80 PRINTD("----1\n");
bcup 2:5311ad7c83e6 81 if(pc.readable())
bcup 2:5311ad7c83e6 82 {
bcup 2:5311ad7c83e6 83 SPI_SlaveWrite();
bcup 2:5311ad7c83e6 84 }
bcup 2:5311ad7c83e6 85 PRINTD("----2\n");
bcup 2:5311ad7c83e6 86 valueFromMaster = spislave.read();
bcup 2:5311ad7c83e6 87 PRINTD("----3\n");
bcup 2:5311ad7c83e6 88 //PRINTD("valueFromMaster=");
bcup 2:5311ad7c83e6 89 //PRINTD("[%c]%x\n",valueFromMaster,valueFromMaster);
bcup 2:5311ad7c83e6 90 rx_buffer[++rx_cnt]=valueFromMaster;
bcup 2:5311ad7c83e6 91 if(valueFromMaster==0)
bcup 2:5311ad7c83e6 92 {
bcup 2:5311ad7c83e6 93 PRINTD("rx_string=");
bcup 2:5311ad7c83e6 94 for(i=0;i<rx_cnt;i++)
bcup 2:5311ad7c83e6 95 {
bcup 2:5311ad7c83e6 96 PRINTD("%c",rx_buffer[i]);
bcup 2:5311ad7c83e6 97 }
bcup 2:5311ad7c83e6 98 PRINTD("\n");
bcup 2:5311ad7c83e6 99 for(i=0;i<=rx_cnt;i++)
bcup 2:5311ad7c83e6 100 {
bcup 2:5311ad7c83e6 101 rx_buffer[i]=0;
bcup 2:5311ad7c83e6 102 PRINTD("Init_rx_buf[%d]=%c\n",i,rx_buffer[i]);
bcup 2:5311ad7c83e6 103 }
bcup 2:5311ad7c83e6 104 rx_cnt=-1;
bcup 2:5311ad7c83e6 105
bcup 2:5311ad7c83e6 106 }//valueFromMaster if
bcup 2:5311ad7c83e6 107
bcup 2:5311ad7c83e6 108 }// spislave.receive() if
bcup 2:5311ad7c83e6 109 /*
bcup 2:5311ad7c83e6 110
bcup 2:5311ad7c83e6 111 */
bcup 2:5311ad7c83e6 112 }//end of while
bcup 2:5311ad7c83e6 113 }//end of main