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fix lpuart read

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This commit is contained in:
Aurel Feer 2022-06-01 14:02:33 +02:00
parent 7842837d5a
commit e28c9dccde
4 changed files with 69 additions and 29 deletions
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5
errors/errno.fugu
View File

@ -1433,3 +1433,8 @@ errors sdhc SDHCD_ERR_ {
failure BULK_FRAME_SET "Bulk frame already set",
failure BULK_FRAME_NOT_SET "Bulk frame not set",
};
errors shelly SHELLY_ERR_ {
failure BUFFER_OVERFLOW "Buffer limits reached",
failure WRITE "String write failed",
};

75
usr/shelly/shelly.c
View File

@ -24,6 +24,35 @@ static struct shelly_st_global * global_state;
#include "shelly_cmd.c"
//prints a null terminated string
errval_t shelly_write_str(char * str) {
errval_t err;
for (size_t i = 0; str[i] != '\0'; ++i) {
err = lpuart_putchar(global_state->uart_s, str[i]);
if (err_is_fail(err)) return err_push(err, SHELLY_ERR_WRITE);
}
err = lpuart_putchar(global_state->uart_s, '\0');
if (err_is_fail(err)) return err_push(err, SHELLY_ERR_WRITE);
return SYS_ERR_OK;
}
void shelly_reset_buffer(void) {
global_state->buffer_i = 0;
global_state->buf[0] = '\0';
}
errval_t shelly_buffer_append(char c) {
global_state->buf[global_state->buffer_i] = c;
global_state->buffer_i += 1;
if (global_state->buffer_i == SHELLY_BUF_SIZE) {
shelly_reset_buffer();
return SHELLY_ERR_BUFFER_OVERFLOW;
}
return SYS_ERR_OK;
}
__attribute__((__used__))
static void handle_lpuart_interrupt(void * arg) {
errval_t err;
@ -31,32 +60,38 @@ static void handle_lpuart_interrupt(void * arg) {
assert(global_state);
char input_char;
err = lpuart_getchar(global_state->uart_s, &input_char);
if (err_is_fail(err)) USER_PANIC_ERR(err, "while trying to get character");
while (true) {
err = lpuart_getchar(global_state->uart_s, &input_char);
if (err == LPUART_ERR_NO_DATA) {
break;
} else if (err_is_fail(err)) {
USER_PANIC_ERR(err, "while trying to get character");
}
err = lpuart_putchar(global_state->uart_s, input_char);
if (err_is_fail(err)) USER_PANIC_ERR(err, "while trying to put character");
if (input_char == ASCII_NL || input_char == ASCII_EOF || input_char == ASCII_CR) {
err = lpuart_putchar(global_state->uart_s, '\n');
err = lpuart_putchar(global_state->uart_s, input_char);
if (err_is_fail(err)) USER_PANIC_ERR(err, "while trying to put character");
global_state->buf[global_state->buffer_i] = '\0';
global_state->buffer_i += 1;
if (input_char == ASCII_NL || input_char == ASCII_EOF || input_char == ASCII_CR) {
err = lpuart_putchar(global_state->uart_s, '\n');
if (err_is_fail(err)) USER_PANIC_ERR(err, "while trying to put character");
err = handle_shelly_cmd(global_state->buf, global_state->buffer_i);
if (err_is_fail(err)) USER_PANIC_ERR(err, "while running command");
global_state->buf[global_state->buffer_i] = '\0';
global_state->buffer_i += 1;
global_state->buffer_i = 0;
err = handle_shelly_cmd(global_state->buf, global_state->buffer_i);
if (err_is_fail(err)) USER_PANIC_ERR(err, "while running command");
err = lpuart_putchar(global_state->uart_s, ASCII_EOT);
if (err_is_fail(err)) USER_PANIC_ERR(err, "while trying to put character");
err = lpuart_putchar(global_state->uart_s, '>');
if (err_is_fail(err)) USER_PANIC_ERR(err, "while trying to put character");
} else {
global_state->buf[global_state->buffer_i] = input_char;
global_state->buffer_i += 1;
global_state->buffer_i %= SHELLY_BUF_SIZE;
shelly_reset_buffer();
err = shelly_write_str("\x3>");
if (err_is_fail(err)) USER_PANIC_ERR(err, "while trying to write string");
} else {
err = shelly_buffer_append(input_char);
if (err_is_fail(err)) {
err = shelly_write_str("shelly buffer full! resetting...\n");
if (err_is_fail(err)) USER_PANIC_ERR(err, "while trying to write string");
}
}
}
SHELLY_DEBUG("[handle_lpuart_interrupt] done\n");
}

4
usr/shelly/shelly.h
View File

@ -50,4 +50,8 @@ struct shelly_st_local {
struct ump_send_chan * send_chan;
};
errval_t shelly_write_str(char * str);
void shelly_reset_buffer(void);
errval_t shelly_buffer_append(char c);
#endif // ndef SHELLY_H_

14
usr/shelly/shelly_cmd.c
View File

@ -15,14 +15,8 @@ static void parse_cmd_line(char * line, int * argc, char ** argv) {
static errval_t shelly_cmd_echo(char * line) {
errval_t err;
SHELLY_DEBUG("[shelly_cmd_echo] argc=%d\n", argc);
for (int i = 0; line[i] != '\0'; ++i) {
err = lpuart_putchar(global_state->uart_s, line[i]);
if (err_is_fail(err)) USER_PANIC_ERR(err, "while trying to put character");
}
err = lpuart_putchar(global_state->uart_s, '\0');
if (err_is_fail(err)) USER_PANIC_ERR(err, "while trying to put character");
err = shelly_write_str(line);
if (err_is_fail(err)) return err;
return SYS_ERR_OK;
}
@ -74,7 +68,9 @@ static errval_t handle_shelly_cmd(char* line, size_t len) {
} else if (strcmp(cmd, "run") == 0) {
return shelly_cmd_run(remaining_line);
} else {
SHELLY_DEBUG("unknown command %s\n", argv[0]);
char buf[256];
snprintf(buf, 256, "unknown command %s\n", cmd);
shelly_write_str(buf);
}
return SYS_ERR_OK;