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JS: Add serial.readAny(timeout)

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helps with starving js script loop due to reading 1 byte each time
This commit is contained in:
Willy-JL
2024-03-23 20:20:12 +00:00
parent 380038c01d
commit c03d3a80bf
2 changed files with 51 additions and 0 deletions
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1
applications/system/js_app/examples/apps/Scripts/uart_echo.js
View File

@@ -11,3 +11,4 @@ while (1) {
}
// There's also serial.end(), so you can serial.setup() again in same script
// You can also use serial.readAny(timeout), will avoid starving your loop with single byte reads

50
applications/system/js_app/modules/js_serial.c
View File

@@ -379,6 +379,55 @@ static void js_serial_read_bytes(struct mjs* mjs) {
free(read_buf);
}
static char* js_serial_receive_any(JsSerialInst* serial, size_t* len, uint32_t timeout) {
uint32_t flags = ThreadEventCustomDataRx;
if(furi_stream_buffer_is_empty(serial->rx_stream)) {
flags = js_flags_wait(serial->mjs, ThreadEventCustomDataRx, timeout);
}
if(flags & ThreadEventCustomDataRx) { // New data received
*len = furi_stream_buffer_bytes_available(serial->rx_stream);
if(!*len) return NULL;
char* buf = malloc(*len);
furi_stream_buffer_receive(serial->rx_stream, buf, *len, 0);
return buf;
}
return NULL;
}
static void js_serial_read_any(struct mjs* mjs) {
mjs_val_t obj_inst = mjs_get(mjs, mjs_get_this(mjs), INST_PROP_NAME, ~0);
JsSerialInst* serial = mjs_get_ptr(mjs, obj_inst);
furi_assert(serial);
if(!serial->setup_done) {
mjs_prepend_errorf(mjs, MJS_INTERNAL_ERROR, "Serial is not configured");
mjs_return(mjs, MJS_UNDEFINED);
return;
}
uint32_t timeout = FuriWaitForever;
do {
size_t num_args = mjs_nargs(mjs);
if(num_args == 1) {
mjs_val_t timeout_arg = mjs_arg(mjs, 0);
if(!mjs_is_number(timeout_arg)) {
break;
}
timeout = mjs_get_int32(mjs, timeout_arg);
}
} while(0);
size_t bytes_read = 0;
char* read_buf = js_serial_receive_any(serial, &bytes_read, timeout);
mjs_val_t return_obj = MJS_UNDEFINED;
if(bytes_read > 0 && read_buf) {
return_obj = mjs_mk_string(mjs, read_buf, bytes_read, true);
}
mjs_return(mjs, return_obj);
free(read_buf);
}
static bool
js_serial_expect_parse_string(struct mjs* mjs, mjs_val_t arg, PatternArray_t patterns) {
size_t str_len = 0;
@@ -617,6 +666,7 @@ static void* js_serial_create(struct mjs* mjs, mjs_val_t* object) {
mjs_set(mjs, serial_obj, "read", ~0, MJS_MK_FN(js_serial_read));
mjs_set(mjs, serial_obj, "readln", ~0, MJS_MK_FN(js_serial_readln));
mjs_set(mjs, serial_obj, "readBytes", ~0, MJS_MK_FN(js_serial_read_bytes));
mjs_set(mjs, serial_obj, "readAny", ~0, MJS_MK_FN(js_serial_read_any));
mjs_set(mjs, serial_obj, "expect", ~0, MJS_MK_FN(js_serial_expect));
*object = serial_obj;