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shelltimer.c
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shelltimer.c
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#include <msp430.h>
#include <libemb/serial/serial.h>
#include <libemb/conio/conio.h>
#include <libemb/shell/shell.h>
/*******************************************
PROTOTYPES & GLOBALS
*******************************************/
int shell_cmd_help(shell_cmd_args *args);
int shell_cmd_argt(shell_cmd_args *args);
int shell_cmd_stop(shell_cmd_args *args);
int shell_cmd_cont(shell_cmd_args *args);
int shell_cmd_setn(shell_cmd_args *args);
int shell_cmd_sped(shell_cmd_args *args);
int shell_cmd_send(shell_cmd_args *args);
void send_char(char c);
unsigned int i = 0; // num mask assumes P1.0 - P1.6
const char num[] = { 0x7D, 0x60, 0x3E, 0x7A, 0x63, 0x5B, 0x5F, 0x71, 0x7F, 0x73, 0x77, 0x4F, 0x0E, 0x6E, 0x1F, 0x17};
/*******************************************
SHELL COMMANDS STRUCT
*******************************************/
shell_cmds my_shell_cmds = {
.count = 7,
.cmds = {
{
.cmd = "help",
.desc = "list available commands",
.func = shell_cmd_help
},
{
.cmd = "args",
.desc = "print back given arguments",
.func = shell_cmd_argt
},
{
.cmd = "stop",
.desc = "disable interrupts",
.func = shell_cmd_stop
},
{
.cmd = "cont",
.desc = "enable interrupts",
.func = shell_cmd_cont
},
{
.cmd = "set",
.desc = "set timer value",
.func = shell_cmd_setn
},
{
.cmd = "speed",
.desc = "set timer speed",
.func = shell_cmd_sped
},
{
.cmd = "send",
.desc = "IR send a char",
.func = shell_cmd_send
}
}
};
/*******************************************
SHELL CALLBACK HANDLERS
*******************************************/
int shell_cmd_help(shell_cmd_args *args) {
int k;
for(k = 0; k < my_shell_cmds.count; k++) {
cio_printf("%s: %s\n\r", my_shell_cmds.cmds[k].cmd, my_shell_cmds.cmds[k].desc);
}
return 0;
}
int shell_cmd_argt(shell_cmd_args *args) {
int k;
cio_print((char *)"args given:\n\r");
for(k = 0; k < args->count; k++) {
cio_printf(" - %s\n\r", args->args[k].val);
}
return 0;
}
int shell_cmd_stop(shell_cmd_args *args) {
__disable_interrupt();
cio_printf("OK, timer stopped\n\r");
return 0;
}
int shell_cmd_cont(shell_cmd_args *args) {
__enable_interrupt();
cio_printf("OK, timer resumed\n\r");
return 0;
}
int shell_cmd_setn(shell_cmd_args *args) {
i = shell_parse_int(args->args[0].val);
if(i > 15) { i = 15; cio_printf("ERROR, maximum value is 15\n\r"); }
P1OUT = num[i];
P1OUT |= (num[i] << 6) & BIT7; // Fix for using UART pins
P2OUT = (num[i] >> 2);
cio_printf("OK, timer set to %i\n\r", i);
return 0;
}
int shell_cmd_sped(shell_cmd_args *args) {
int speed = shell_parse_int(args->args[0].val);
TA0CCR0 = speed;
cio_printf("OK, speed set to %i\n\r", speed);
return 0;
}
int shell_cmd_send(shell_cmd_args *args) {
char *c = args->args[0].val;
__enable_interrupt();
int i;
for(i = 0; c[i] != '\0'; i++) {
send_char(c[i]);
__delay_cycles(500000L);
}
cio_printf("OK, sent '%s'\n\r", c);
__disable_interrupt();
return 0;
}
int shell_process(char *cmd_line) {
return shell_process_cmds(&my_shell_cmds, cmd_line);
}
/*******************************************
INITIALIZE
*******************************************/
void main(void) {
WDTCTL = WDTPW + WDTHOLD; // Stop watchdog timer
BCSCTL1 = CALBC1_1MHZ;
DCOCTL = CALDCO_1MHZ;
// BCSCTL3 = (BCSCTL3 & ~(BIT4+BIT5)) | LFXT1S_2; // Disable xtal
serial_init(9600);
// P1DIR = 0xFF; // Set P1 as output
// P2DIR = BIT0; // Set P2.0 as output
// P1OUT = 0; // Display initially blank
// P2OUT = 0;
// TA0CCR0 = 0x7FFF; // Count limit 32767, 1 second
// TA0CCTL0 = 0x10; // Enable counter interrupts
// TA0CTL = TASSEL_1 + MC_1; // Timer A 0 with ACLK @ 32KHz, count UP
P1OUT = 0;
P1DIR |= BIT6; // Enable PWM output on P1.6
P1SEL |= BIT6;
TACTL = TASSEL_2 | MC_1 /* | ID_3 */; // Timer A config: SMCLK, count up
TACCTL1 = OUTMOD_0; // Make sure IR is off
__enable_interrupt(); // Enable global interrupts
/*******************************************
MAIN LOOP
*******************************************/
for(;;) {
int j = 0; // Char array counter
char cmd_line[90] = {0}; // Init empty array
cio_print((char *) "$ "); // Display prompt
char c = cio_getc(); // Wait for a character
while(c != '\r') { // until return sent then ...
if(c == 0x08) { // was it the delete key?
if(j != 0) { // cursor NOT at start?
cmd_line[--j] = 0; cio_printc(0x08); cio_printc(' '); cio_printc(0x08);
} // delete key logic
} else { // otherwise ...
cmd_line[j++] = c; cio_printc(c); // echo received char
}
c = cio_getc(); // Wait for another
}
cio_print((char *) "\n\n\r"); // Delimit command result
switch(shell_process(cmd_line)) // Execute specified shell command
{ // and handle any errors
case SHELL_PROCESS_ERR_CMD_UNKN:
cio_print((char *) "ERROR, unknown command given\n\r");
break;
case SHELL_PROCESS_ERR_ARGS_LEN:
cio_print((char *) "ERROR, an arguement is too lengthy\n\r");
break;
case SHELL_PROCESS_ERR_ARGS_MAX:
cio_print((char *) "ERROR, too many arguements given\n\r");
break;
default:
break;
}
cio_print((char *) "\n"); // Delimit before prompt
}
}
/*******************************************
INTERRUPTS
*******************************************/
// #pragma vector=TIMER0_A0_VECTOR
// __interrupt void Timer0_A0 (void) {
// P1OUT = num[i];
// P1OUT |= (num[i] << 6) & BIT7; // Fix for using UART pins
// P2OUT = (num[i++] >> 2);
// if(i > 15) { i = 0; }
// }