Trombetta Michele
This is a simple terminal used for send and receive data via SPI (p5, p6, p7). It use the usb as serial (9600bps) interface port.
Commands:
# All the numeric constants MUST be in Hexadecimal #
- C[level] - Change the [level] of the CS line (p8)
- D[data] - Send single byte of [data]
- M[data],[data], .. ,[data] - Send multiple bytes of [data]
- F[data],[size] - Send a flow sized [size] of [data] bytes
- R[size] - Receive [size] bytes
Examples
- C0 - Put the CS at logic level 0
- C1 - Put the CS at logic level 1
- Dab - Send out the byte 0xab
- M55,aa,01,ab,cd - Send out the bytes 0x55, 0xaa, 0x01, 0xab, 0xcd
- Fff,05 - Send out 5 bytes of value 0xff
- R10 - Receive 16 bytes
Revision 0:7beba59b8a7d, committed 2014-05-19
- Comitter:
- trombettamichele
- Date:
- Mon May 19 18:45:27 2014 +0000
- Commit message:
- Simple SPI Terminal
Changed in this revision
| main.cpp | Show annotated file Show diff for this revision Revisions of this file |
| mbed.bld | Show annotated file Show diff for this revision Revisions of this file |
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Mon May 19 18:45:27 2014 +0000
@@ -0,0 +1,104 @@
+#include "mbed.h"
+#include <string.h>
+#include <stdlib.h>
+
+/* Commands:
+ Dd - Data out
+ Cx - CS line state (0/1)
+ Fd,l - Data flow out, the total size is l
+ Rl - Receive data, l is the size
+ Md,d.. - Multiple data write
+*/
+
+DigitalOut myled(LED1);
+
+SPI spi_device(p5, p6, p7);
+DigitalOut spi_cs(p8);
+
+Serial tty_usb(USBTX, USBRX);
+char tty_buffer[0x100];
+
+void receive_command() {
+ uint8_t buffer_ptr = 0;
+ char ch;
+
+ tty_usb.putc('>');
+ while (1) {
+ if (tty_usb.readable()) {
+ ch = tty_usb.getc();
+ tty_usb.putc(ch);
+
+ tty_buffer[buffer_ptr] = ch;
+ buffer_ptr++;
+ if ((ch == '\n') || (ch == '\r')) {
+ tty_usb.putc('\n');
+ tty_usb.putc('\r');
+ break;
+ }
+ if (ch == 0x7f) {
+ buffer_ptr -= 2;
+ tty_usb.putc(0x8);
+ tty_usb.putc(' ');
+ tty_usb.putc(0x8);
+ }
+ }
+ }
+}
+
+int main() {
+ uint8_t arg_data, arg_data_in;
+ uint16_t arg_size;
+ char *arg_ptr;
+
+ tty_usb.baud(9600);
+
+ while(1) {
+
+ receive_command();
+ switch (tty_buffer[0]) {
+ case 'D':
+ case 'd':
+ arg_data = strtol(&tty_buffer[1], NULL, 16);
+ arg_data_in = spi_device.write(arg_data);
+ tty_usb.printf("#\tSingle data: OUT: $%02X - IN: $%02X\n\r", arg_data, arg_data_in);
+ break;
+ case 'C':
+ case 'c':
+ spi_cs = (tty_buffer[1] == '0') ? 0 : 1;
+ break;
+ case 'R':
+ case 'r':
+ arg_size = strtol(&tty_buffer[1], NULL, 16);
+ for (int i = 0; i < arg_size; i++)
+ tty_usb.printf("#\tReceived data [$%04X]: $%02X\n\r", i, spi_device.write(0x00));
+ break;
+
+ case 'F':
+ case 'f':
+ arg_size = strtol(strchr(tty_buffer, ',')+1, NULL, 16);
+ *(strchr(tty_buffer, ',') + 1) = 0x00;
+ arg_data = strtol(&tty_buffer[1], NULL, 16);
+
+ for (int i = 0; i < arg_size; i++) {
+ arg_data_in = spi_device.write(arg_data);
+ tty_usb.printf("#\tFlow data [$%04X]: OUT: $%02X - IN: $%02X\n\r", i, arg_data, arg_data_in);
+
+ }
+ break;
+
+ case 'M':
+ case 'm':
+ arg_ptr = strtok(&tty_buffer[1], ",\n\r");
+ arg_size = 0;
+ while (arg_ptr != NULL) {
+ arg_data = strtol(arg_ptr, NULL, 16);
+ arg_data_in = spi_device.write(arg_data);
+ tty_usb.printf("#\tMultiple data [$%04X]: OUT: $%02X - IN: $%02X\n\r", arg_size, arg_data, arg_data_in);
+ arg_ptr = strtok(NULL, ",\n\r");
+ arg_size++;
+ }
+ break;
+
+ }
+ }
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Mon May 19 18:45:27 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/8a40adfe8776 \ No newline at end of file