Kedu ihe bụ UART?
UART na-anọchi anya Universal Asynchronous Receiver/ Transmitter. Ọ bụ nzikọrịta ozi serial / protocol dị ka SPI na I2C, ọ nwere ike ịbụ sekit anụ ahụ na microcontroller, ma ọ bụ IC guzoro ọtọ. Ebumnuche UART bụ ịnyefe na ịnata data serial. Otu n'ime ihe kacha mma gbasara UART Bluetooth modul bụ na ọ na-eji naanị wires abụọ bufee data n'etiti ngwaọrụ.
UART na-ebufe data n'otu n'otu, nke pụtara na enweghị mgbaama elekere iji mekọrịta nsonaazụ nke ibe n'ibe sitere na UART na-ebufe na nlele nke ibe n'ibe site na UART na-anata. Kama mgbama elekere, UART na-ebufe na-agbakwunye mmalite na kwụsịtụ na ngwugwu data a na-ebufe. Ihe ibe n'ibe ndị a na-akọwa mmalite na njedebe nke ngwugwu data ka UART na-anata mara mgbe ịmalite ịgụ ibe n'ibe.
Mgbe UART na-anata na-achọpụta ntakịrị mmalite, ọ na-amalite ịgụ ihe ndị na-abata n'otu oge a maara dị ka ọnụego baud. Ọnụego Baud bụ ihe nleba anya ọsọ nke mbufe data, nke egosipụtara na ibe n'iku kwa nkeji (bps). Abụọ UART ga-arụ ọrụ n'ihe dịka ọnụego baud. Ọnụego baud dị n'etiti nnyefe na ịnweta UART nwere ike ịdị iche site na ± 5% tupu oge nke bits na-adị anya.
Kedu ntụtụ dị na UART?
VCC: pin ọkọnọ ike, na-abụkarị 3.3v
GND: ntụtụ ala
RX: Anata ntụtụ data
TX: Nyefee ntụtụ data
Ugbu a, HCI kachasị ewu ewu bụ njikọ UART na USB, UART na-ewu ewu n'ozuzu n'ihi na arụmọrụ ya na ọkwa ntinye data dị ka interfaces USB, na usoro mgbasa ozi dị mfe, nke na-ebelata software n'elu ma bụrụ ọnụ ahịa karịa ọnụ ahịa. ngwọta ngwaike zuru oke.
UART interface nwere ike ịrụ ọrụ na modul Bluetooth na-anọghị na shelf.
Ihe niile Feasycom Ụdị Bluetooth kwado UART interface site na ndabara. Anyị na-enyekwa TTL serial ọdụ ụgbọ mmiri maka nkwukọrịta UART. Ọ dị mfe ma dị mfe maka ndị mmepe ịnwale ngwaahịa ha.
N'ihi na UART nkwurịta okwu Bluetooth modul nkọwa, ị nwere ike ịkpọtụrụ Feasycom ahịa otu ozugbo.
