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/*
* Test code with a small CLI on the management interface
*
*/
#include "stm32f4xx_hal.h"
#include "stm-init.h"
#include "stm-led.h"
#include "stm-uart.h"
#include <string.h>
#include <libcli.h>
#define DELAY() HAL_Delay(250)
int cmd_show_cpuspeed(struct cli_def *cli, const char *command, char *argv[], int argc)
{
volatile uint32_t hclk;
hclk = HAL_RCC_GetHCLKFreq();
cli_print(cli, "HCLK: %li (%i MHz)", hclk, (int) hclk / 1000 / 1000);
return CLI_OK;
}
void uart_cli_print(struct cli_def *cli __attribute__ ((unused)), const char *buf)
{
char crlf[] = "\r\n";
uart_send_string2(STM_UART_MGMT, buf);
uart_send_string2(STM_UART_MGMT, crlf);
}
int uart_cli_read(struct cli_def *cli __attribute__ ((unused)), void *buf, size_t count)
{
if (uart_recv_char2(STM_UART_MGMT, buf, count) != HAL_OK) {
return -1;
}
return 1;
}
int uart_cli_write(struct cli_def *cli __attribute__ ((unused)), const void *buf, size_t count)
{
uart_send_bytes(STM_UART_MGMT, (uint8_t *) buf, count);
return (int) count;
}
int embedded_cli_loop(struct cli_def *cli)
{
unsigned char c;
int n = 0;
static struct cli_loop_ctx ctx;
memset(&ctx, 0, sizeof(ctx));
ctx.insertmode = 1;
cli->state = CLI_STATE_LOGIN;
/* start off in unprivileged mode */
cli_set_privilege(cli, PRIVILEGE_UNPRIVILEGED);
cli_set_configmode(cli, MODE_EXEC, NULL);
cli_error(cli, "%s", cli->banner);
while (1) {
cli_loop_start_new_command(cli, &ctx);
HAL_GPIO_TogglePin(LED_PORT, LED_YELLOW);
while (1) {
HAL_GPIO_TogglePin(LED_PORT, LED_BLUE);
cli_loop_show_prompt(cli, &ctx);
n = cli_loop_read_next_char(cli, &ctx, &c);
//cli_print(cli, "Next char: '%c' (n == %i)", c, n);
if (n == CLI_LOOP_CTRL_BREAK)
break;
if (n == CLI_LOOP_CTRL_CONTINUE)
continue;
n = cli_loop_process_char(cli, &ctx, c);
if (n == CLI_LOOP_CTRL_BREAK)
break;
if (n == CLI_LOOP_CTRL_CONTINUE)
continue;
}
if (ctx.l < 0) break;
//cli_print(cli, "Process command: '%s'", ctx.cmd);
n = cli_loop_process_cmd(cli, &ctx);
if (n == CLI_LOOP_CTRL_BREAK)
break;
}
return CLI_OK;
}
int check_auth(const char *username, const char *password)
{
if (strcasecmp(username, "ct") != 0)
return CLI_ERROR;
if (strcasecmp(password, "ct") != 0)
return CLI_ERROR;
return CLI_OK;
}
int
main()
{
struct cli_command cmd_show_s = {(char *) "show", NULL, 0, NULL, PRIVILEGE_UNPRIVILEGED, MODE_EXEC, NULL, NULL, NULL};
struct cli_command cmd_show_cpuspeed_s = {(char *) "cpuspeed", cmd_show_cpuspeed, 0,
(char *) "Show the speed at which the CPU currently operates",
PRIVILEGE_UNPRIVILEGED, MODE_EXEC, NULL, NULL, NULL};
char crlf[] = "\r\n";
uint8_t tx = 'A';
uint8_t rx = 0;
uint8_t upper = 0;
struct cli_def cli;
memset(&cli, 0, sizeof(cli));
stm_init();
HAL_GPIO_WritePin(LED_PORT, LED_RED, GPIO_PIN_SET);
cli_init(&cli);
cli_read_callback(&cli, uart_cli_read);
cli_write_callback(&cli, uart_cli_write);
cli_print_callback(&cli, uart_cli_print);
cli_set_banner(&cli, "libcli on an STM32");
cli_set_hostname(&cli, "cryptech");
cli_set_auth_callback(&cli, check_auth);
cli_telnet_protocol(&cli, 0);
cli_register_command2(&cli, &cmd_show_s, NULL);
cli_register_command2(&cli, &cmd_show_cpuspeed_s, &cmd_show_s);
HAL_GPIO_WritePin(LED_PORT, LED_RED, GPIO_PIN_RESET);
HAL_GPIO_WritePin(LED_PORT, LED_GREEN, GPIO_PIN_SET);
embedded_cli_loop(&cli);
while (1) {
led_toggle(LED_GREEN);
uart_send_char2(STM_UART_USER, tx + upper);
uart_send_char2(STM_UART_MGMT, tx + upper);
DELAY();
if (uart_recv_char2(STM_UART_USER, &rx, 0) == HAL_OK ||
uart_recv_char2(STM_UART_MGMT, &rx, 0) == HAL_OK) {
led_toggle(LED_YELLOW);
if (rx == '\r') {
upper = upper == 0 ? ('a' - 'A'):0;
}
}
if (tx++ == 'Z') {
/* linefeed after each alphabet */
uart_send_string2(STM_UART_USER, crlf);
uart_send_string2(STM_UART_MGMT, crlf);
tx = 'A';
led_toggle(LED_BLUE);
}
}
}
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