diff options
Diffstat (limited to 'avr/cmd_pin.c')
| -rw-r--r-- | avr/cmd_pin.c | 329 |
1 files changed, 329 insertions, 0 deletions
diff --git a/avr/cmd_pin.c b/avr/cmd_pin.c new file mode 100644 index 0000000..b46b853 --- /dev/null +++ b/avr/cmd_pin.c @@ -0,0 +1,329 @@ +#include "common.h" +#include <stdlib.h> +#include <string.h> +#include <ctype.h> +#include <avr/pgmspace.h> + +#include "command.h" +#include "print-utils.h" +#include "getopt-min.h" +#include "env.h" +#include "pin.h" +//#include "debug.h" + + + +static const int namestr = PIN_MAX; +static char *pin_names[PIN_MAX+1]; +static uint_least8_t pin_names_width; + +static void pinnames_get(void) +{ + static const FLASH char delim1[] = {":= "}; + static const FLASH char delim2[] = {", "}; + char *lp; + char *ptr; + uint_fast8_t i; + + if (pin_names[namestr] != NULL) + free(pin_names[namestr]); + memset(pin_names, 0, sizeof(pin_names)); + pin_names_width = 0; + + if ((lp = getenv(PSTR(ENV_PINALIAS))) != NULL) { + pin_names[namestr] = strdup(lp); + ptr = strtok_P(pin_names[namestr], delim1); + while (ptr != NULL) { + if (((i = strtoul(ptr, &lp, 10)) < PIN_MAX) && + lp != ptr && + (ptr = strtok_P(NULL, delim2)) != NULL ) { + pin_names[i] = ptr; + ptr = strtok_P(NULL, delim1); + } + } + + for (i = 0; i < PIN_MAX; i++) + if (strlen(pin_names[i]) > pin_names_width) + pin_names_width = strlen(pin_names[i]); + } +} + + +static size_t xstrlen(char *s) +{ + if (s == NULL) + return 0; + else + return strlen(s); +} + +static const FLASH char * const FLASH pinconf_str[] = { + FSTR("?"), + FSTR("Input"), + FSTR("Pullup"), + FSTR("Output"), + FSTR("Clock"), + }; + +static const FLASH char * const FLASH pinlevel_str[] = { + FSTR("Low"), + FSTR("High"), + FSTR(""), + }; + +static int print_pin(int pin, int multi) +{ + int pinconf; + const FLASH char *levelp; + long div; + + pinconf = pin_config_get(pin); + if (pinconf == OUTPUT_TIMER) { + div = pin_clockdiv_get(pin); + levelp = pinlevel_str[2]; + } else + levelp = pinlevel_str[pin_read(pin)]; + + if (multi) { + printf_P(PSTR("%3d "), pin); + if (pin_names_width) { + printf_P(PSTR("%s "), pin_names[pin]); + print_blanks(pin_names_width - xstrlen(pin_names[pin])); + } + my_puts_P(pinconf_str[pinconf]); + print_blanks(7 - strlen_P(pinconf_str[pinconf])); + my_puts_P(levelp); + print_blanks(5 - strlen_P(levelp)); + if (pinconf == OUTPUT_TIMER) + printf_P(PSTR("%8ld %8ld"), + div, F_CPU/div); + } else { + printf_P(PSTR("%d: \"%s\", "), pin, pin_names[pin] ? pin_names[pin] : 0); + my_puts_P(pinconf_str[pinconf]); + printf_P(PSTR(", ")); + my_puts_P(levelp); + + if (pinconf == OUTPUT_TIMER) + printf_P(PSTR("divide by %ld (%ldHz)"), + div, F_CPU/div); + } + printf_P(PSTR("\n")); + + return 0; +} + +static int_fast8_t pinarg_insert(int pin, uint_fast8_t count, uint_fast8_t pinarg[]) +{ + uint_fast8_t pos; + + if (pin < 0 || pin >= PIN_MAX) + return -1; + + for (pos = 0; pos < count; pos++) { + if (pin == pinarg[pos]) + return 0; + if (pin < pinarg[pos]) + break; + } + for (uint_fast8_t i = count-1; i == pos ; i--) + pinarg[i+1] = pinarg[i]; + pinarg[pos] = pin; + + return 1; +} + +static uint_fast8_t pinarg_get(char * arg, uint_fast8_t pinarg[]) +{ + char *endp; + uint_fast8_t pin1; + int_fast8_t rc; + uint_fast8_t count = 0; + + while (1) { + pin1 = strtoul(arg, &endp, 10); + if (endp != arg && *endp == '-') { + arg = endp+1; + uint_fast8_t pin2 = (int) strtoul(arg, &endp, 10); + if (pin1 < pin2) + for (; pin1 < pin2; pin1++) + if ((rc = pinarg_insert(pin1, count, pinarg)) >= 0) + count += rc; + else + return 0; + else + return 0; + } + if (endp != arg) { + if ((*endp == ',' || *endp == '\0') && + (rc = pinarg_insert(pin1, count, pinarg)) >= 0) { + count += rc; + if (*endp == '\0') + return count; + } else + return 0; + } else + return 0; + + arg = endp+1; + } +} + + +command_ret_t do_pin(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) +{ + char printheader = 1; + uint_fast8_t pinarg[PIN_MAX]; + uint_fast8_t pinargc; + + (void) cmdtp; (void) flag; + + /* reset getopt() */ + optind = 1; + + int opt; + while ((opt = getopt(argc, argv, PSTR("s"))) != -1) { + switch (opt) { + case 's': + printheader = 0; + break; + default: /* '?' */ + return CMD_RET_USAGE; + } + } + + /* remaining arguments */ + argc -= optind; + + pinnames_get(); + + if (argc == 0) { + /* print cofig of all pins */ + for (pinargc = 0; pinargc < PIN_MAX; pinargc++) + pinarg[pinargc] = pinargc; + } else { + /* get first arg */ + pinargc = pinarg_get(argv[optind++], pinarg); + if (pinargc == 0) + return CMD_RET_USAGE; + else + argc--; + } + + if (argc == 0) { + /* no more args, print config */ + if (pinargc == 1) + print_pin(pinarg[0], 0); + else { + if (printheader) { + if (pin_names_width > 0) { + if ( strlen("Name") > pin_names_width) + pin_names_width = strlen("Name"); + char s[pin_names_width+1]; + memset(s, ' ', pin_names_width); + s[pin_names_width] = '\0'; + strncpy_P(s, PSTR("Name"), 4); + printf_P(PSTR("Pin %s Config Level Divider Frequency/Hz\n"),s); + memset(s, '-', pin_names_width); + printf_P(PSTR("----%s-----------------------------------\n"), s); + } else + printf_P(PSTR("Pin Config Level Divider Frequency/Hz\n" + "--------------------------------------\n")); + } + for (uint_fast8_t i = 0; i < pinargc; i++) + print_pin(pinarg[i], 1); + } + return CMD_RET_SUCCESS; + } + + /* arguments must be in pairs: pins conf */ + if (argc % 2 != 1) + return CMD_RET_USAGE; + + while (argc > 0) { + char *endp; + pinmode_t mode = NONE; + int level = 0; + unsigned long value = 0; + uint8_t hz_flag = 0; + + switch (toupper(argv[optind][0])) { + case 'H': + level = 1; + case 'L': + mode = OUTPUT; + break; + case 'P': + mode = INPUT_PULLUP; + break; + case 'I': + case 'T': + mode = INPUT; + break; + + default: + value = strtoul(argv[optind], &endp, 10); + switch (*endp) { + case 'M': + value *= 1000; + case 'K': + value *= 1000; + endp++; + } + + if (*endp && strcmp_P(endp, PSTR("Hz")) == 0) { + hz_flag = 1; + endp += 2; + } + + if (*endp != '\0') { + printf_P(PSTR("invalid parameter: '%s'\n"), argv[optind]); + return CMD_RET_USAGE; + } + + if (value == 0) { + printf_P(PSTR("invalid value: %lu \n")); + return CMD_RET_USAGE; + } + + if (hz_flag) { + if (value > F_CPU / 2) { + printf_P(PSTR("Max frequency is: %luHz\n"), F_CPU/2); + return CMD_RET_USAGE; + } + value = F_CPU/value; + } + mode = OUTPUT_TIMER; + + } + + if (mode == NONE) + return CMD_RET_USAGE; + + for (uint_fast8_t i = 0; i < pinargc; i++) { + switch (mode) { + case OUTPUT: + pin_write(pinarg[i], level); + /* fall thru */ + case INPUT: + case INPUT_PULLUP: + pin_config(pinarg[i], mode); + break; + case OUTPUT_TIMER: + if (pin_clockdiv_set(pinarg[i], value) < 0) { + printf_P(PSTR("Setting pin %d to %lu failed.\n"), + pinarg[i], value); + } + break; + default: + break; + } + } + + optind++; + pinargc = pinarg_get(argv[optind++], pinarg); + argc -= 2; + } + + return CMD_RET_SUCCESS; +} + |