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- /*
- * console.c
- */
-
- #include <inttypes.h>
- #include <string.h>
- #include "pico/stdlib.h"
-
- #include "config.h"
- #include "log.h"
- #include "pmw3360.h"
- #include "util.h"
- #include "console.h"
-
- #define CNSL_BUFF_SIZE 1024
-
- static char cnsl_line_buff[CNSL_BUFF_SIZE + 1];
- static uint32_t cnsl_buff_pos = 0;
-
- static void cnsl_interpret(const char *line) {
- if ((strcmp(line, "help") == 0)
- || (strcmp(line, "h") == 0)
- || (strcmp(line, "?") == 0)) {
- print("Trackball Firmware Usage:");
- print(" cpi - print current sensitivity");
- print(" cpi N - set sensitivity");
- print(" pmw - print PMW3360 status");
- print(" help - print this message");
- print(" \\x18 - reset to bootloader");
- } else if (strcmp(line, "pmw") == 0) {
- pmw_print_status();
- } else if (strcmp(line, "cpi") == 0) {
- uint8_t sense = pmw_get_sensitivity();
- uint16_t cpi = PMW_SENSE_TO_CPI(sense);
- print("current cpi: %u (0x%02X)", cpi, sense);
- } else if (str_startswith(line, "cpi ")) {
- const char *num_str = line + 4;
- uintmax_t num = strtoumax(num_str, NULL, 10);
- if ((num < 100) || (num > 12000)) {
- print("invalid cpi %llu, needs to be %u <= cpi <= %u", num, 100, 12000);
- } else {
- num /= 100;
- num -= 1;
- print("setting cpi to 0x%02llX", num);
- pmw_set_sensitivity(num);
- }
- } else {
- print("unknown command \"%s\"", line);
- }
- }
-
- void cnsl_init(void) {
- cnsl_buff_pos = 0;
- for (int i = 0; i < sizeof(cnsl_line_buff); i++) {
- cnsl_line_buff[i] = '\0';
- }
- }
-
- static int32_t cnsl_find_line_end(void) {
- for (int32_t i = 0; i < cnsl_buff_pos; i++) {
- if ((cnsl_line_buff[i] == '\r') || (cnsl_line_buff[i] == '\n')) {
- return i;
- }
- }
- return -1;
- }
-
- void cnsl_handle_input(const char *buf, uint32_t len) {
- if ((cnsl_buff_pos + len) > CNSL_BUFF_SIZE) {
- debug("error: console input buffer overflow! %lu > %u", cnsl_buff_pos + len, CNSL_BUFF_SIZE);
- cnsl_init();
- }
-
- memcpy(cnsl_line_buff + cnsl_buff_pos, buf, len);
- cnsl_buff_pos += len;
-
- int32_t line_len = cnsl_find_line_end();
- if (line_len < 0) {
- // user has not pressed enter yet
- return;
- }
-
- // convert line to C-style string
- cnsl_line_buff[line_len] = '\0';
-
- // TODO handle backspace and other terminal commands?
-
- cnsl_interpret(cnsl_line_buff);
-
- // clear string and move following data over
- uint32_t cnt = line_len + 1;
- if (cnsl_line_buff[line_len + 1] == '\n') {
- cnt++;
- }
- memset(cnsl_line_buff, '\0', cnt);
- memmove(cnsl_line_buff, cnsl_line_buff + cnt, sizeof(cnsl_line_buff) - cnt);
- cnsl_buff_pos -= cnt;
- }
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