Внедрение видеоконференций
Мaple mini - клон платы STM32 Leaf Maple Mini
Полнофункциональный ARM контроллер на основе процессора ARM Cortex M3. На плате установлен процессор STM32F103CBT6. Плата приходит с нераспаянными гребенками. Плата не дорогая, размер небольшой. Хорошо подходит для небольших устройств Размеры платы: 50 х 18 мм
Программируется через ST-LINK. Плата сама может использоваться как программатор ST-Link при соответствующей прошивке.
Для программирования через ST-Link подключить
1 VDD_TARGET VDD from application - не нужно
2 SWCLK SWD clock --->D21
3 GND Ground ---->GND
4 SWDIO SWD data input/output --->D22
Внимание! Питание 3.3V через пин VCC, либо питание через USB, либо до 3-12V через VIN.
При программировании через STM32Discovery можно использовать питание от одного USB хаба, чтобы не нагружать схему питания Discovery
описание и документация на сайте ST
http://www.st.com/web/catalog/mmc/FM141/SC1169/SS1031/LN1565/PF189782?sc=internet/mcu/product/189782.jsp#
Technical Specifications
:MCU: STM32F103CBT6 a 32-bit ARM Cortex M3 microprocessor
Clock Speed: 72 MHz
128 KB Flash and 20 KB SRAM
34 digital I/ pins (GPIOs)
12 PWM pins at 16 bit resolution
9 analog input (ADC) pins at 12 bit resolution
2 SPI peripherals
2 I2C peripherals
7 Channels of Direct Memory Access (DMA) (dma.h)
3 USART (serial port) peripherals
1 advanced and 3 general-purpose timers
Dedicated USB port for programming and communications
JTAG
Nested Vectored Interrupt Controller (NVIC) (including external interrupt on GPIOs)
Supplies up to 500 mA at 3.3 V, with separate 250 mA digital and analog regulators for low-noise analog performance
Open source, four layer design
Support for low power, sleep, and standby modes (<500 μA)
Operating Voltage: 3.3 V
Input Voltage (recommended): 3 V — 12 V
Распиновка Maple Mini STM32Note that this table is not exhaustive; on some pins, more peripherals are available than are listed here.
|
Pin |
5 V Tolerant? |
||||||
|
D0 |
PB11 |
|
|
2_SDA |
3_RX |
|
Yes |
|
D1 |
PB10 |
|
|
2_SCL |
3_TX |
|
Yes |
|
D2 |
PB2 |
|
|
|
|
|
Yes |
|
D3 |
PB0 |
CH8 |
3_CH3 |
|
|
|
|
|
D4 |
PA7 |
CH7 |
3_CH2 |
|
|
1_MOSI |
|
|
D5 |
PA6 |
CH6 |
3_CH1 |
|
|
1_MISO |
|
|
D6 |
PA5 |
CH5 |
|
|
|
1_SCK |
|
|
D7 |
PA4 |
CH4 |
|
|
2_CK |
1_NSS |
|
|
D8 |
PA3 |
CH3 |
2_CH4 |
|
2_RX |
|
|
|
D9 |
PA2 |
CH2 |
2_CH3 |
|
2_TX |
|
|
|
D10 |
PA1 |
CH1 |
2_CH2 |
|
2_RTS |
|
|
|
D11 |
PA0 |
CH0 |
2_CH1_ETR |
|
2_CTS |
|
|
|
D12 |
PC15 |
|
|
|
|
|
|
|
D13 |
PC14 |
|
|
|
|
|
|
|
D14 |
PC13 |
|
|
|
|
|
|
|
D15 |
PB7 |
|
4_CH2 |
1_SDA |
|
|
Yes |
|
D16 |
PB6 |
|
4_CH1 |
2_SCL |
|
|
Yes |
|
D17 |
PB5 |
|
|
1_SMBA |
|
|
|
|
D18 |
PB4 |
|
|
|
|
|
Yes |
|
D19 |
PB3 |
|
|
|
|
|
Yes |
|
D20 |
PA15 |
|
|
|
|
|
Yes |
|
D21 |
PA14 |
|
|
|
|
|
Yes |
|
D22 |
PA13 |
|
|
|
|
|
Yes |
|
D23 |
PA12 |
|
1_ETR |
|
1_RTS |
|
Yes |
|
D24 |
PA11 |
|
1_CH4 |
|
1_CTS |
|
Yes |
|
D25 |
PA10 |
|
1_CH3 |
|
1_RX |
|
Yes |
|
D26 |
PA9 |
|
1_CH2 |
|
1_TX |
|
Yes |
|
D27 |
PA8 |
|
1_CH1 |
|
1_CK |
|
Yes |
|
D28 |
PB15 |
|
|
|
|
2_MOSI |
Yes |
|
D29 |
PB14 |
|
|
|
3_RTS |
2_MISO |
Yes |
|
D30 |
PB13 |
|
|
|
3_CTS |
2_SCK |
Yes |
|
D31 |
PB12 |
|
1_BKIN |
2_SMBA |
3_CK |
2_NSS |
Yes |
|
D32 |
PB8 |
|
4_CH3 |
|
|
|
Yes |
|
D33 |
PB1 |
CH9 |
3_CH4 |
|
|
|
|
Источник <http://static.leaflabs.com/pub/leaflabs/maple-docs/latest/hardware/maple-mini.html>
The following table shows what pins are associated with each GPIO port.
|
GPIOA |
GPIOB |
GPIOC |
|
PA0: D11 |
PB0: D3 |
PC0: - |
|
PA1: D10 |
PB1: D33 |
PC1: - |
|
PA2: D9 |
PB2: D2 |
PC2: - |
|
PA3: D8 |
PB3: D19 |
PC3: - |
|
PA4: D7 |
PB4: D18 |
PC4: - |
|
PA5: D6 |
PB5: D17 |
PC5: - |
|
PA6: D5 |
PB6: D16 |
PC6: - |
|
PA7: D4 |
PB7: D15 |
PC7: - |
|
PA8: D27 |
PB8: D32 |
PC8: - |
|
PA9: D26 |
PB9: - |
PC9: - |
|
PA10: D25 |
PB10: D1 |
PC10: - |
|
PA11: D24 |
PB11: D0 |
PC11: - |
|
PA12: D23 |
PB12: D31 |
PC12: - |
|
PA13: D22 |
PB13: D30 |
PC13: D14 |
|
PA14: D21 |
PB14: D29 |
PC14: D13 |
|
PA15: D20 |
PB15: D28 |
PC15: D12 |
The following table shows what pins are associated with a particular timer’s capture/compare channels.
The following table shows which pins connect to which EXTI lines.
|
EXTI Line |
Pins |
|
EXTI0 |
D3, D11 |
|
EXTI1 |
D10, D33 |
|
EXTI2 |
D2, D9 |
|
EXTI3 |
D8, D19 |
|
EXTI4 |
D7, D18 |
|
EXTI5 |
D6, D17 |
|
EXTI6 |
D5, D16 |
|
EXTI7 |
D4, D15 |
|
EXTI8 |
D27, D32 |
|
EXTI9 |
D26 |
|
EXTI10 |
D1, D25 |
|
EXTI11 |
D0, D24 |
|
EXTI12 |
D23, D31 |
|
EXTI13 |
D14, D22, D30 |
|
EXTI14 |
D13, D21, D29 |
|
EXTI15 |
D12, D20, D28 |
The Maple Mini has three serial ports (also known as USARTs). They communicate using the pins given in the following table.
|
Serial Port |
TX |
RX |
CK |
CTS |
RTS |
|
Serial1 |
D26 |
D25 |
D27 |
D24 |
D23 |
|
Serial2 |
D9 |
D8 |
D7 |
D11 |
D10 |
|
Serial3 |
D1 |
D0 |
D31 |
D30 |
D29 |
This section lists the Maple Mini’s board-specific values.
- CYCLES_PER_MICROSECOND: 72
- BOARD_BUTTON_PIN: 32
- BOARD_LED_PIN: 33
- BOARD_NR_GPIO_PINS: 34
- BOARD_NR_PWM_PINS: 12
- boardPWMPins: 3, 4, 5, 8, 9, 10, 11, 15, 16, 25, 26, 27
- BOARD_NR_ADC_PINS: 9
- boardADCPins: 3, 4, 5, 6, 7, 8, 9, 10, 11
- BOARD_NR_USED_PINS: 4
- boardUsedPins: BOARD_LED_PIN, BOARD_BUTTON_PIN, 23, 24 (23 and 24 are used by USB)
- BOARD_NR_USARTS: 3
- BOARD_USART1_TX_PIN: 26
- BOARD_USART1_RX_PIN: 25
- BOARD_USART2_TX_PIN: 9
- BOARD_USART2_RX_PIN: 8
- BOARD_USART3_TX_PIN: 1
- BOARD_USART3_RX_PIN: 0
- BOARD_NR_SPI: 2
- BOARD_SPI1_NSS_PIN: 7
- BOARD_SPI1_MOSI_PIN: 4
- BOARD_SPI1_MISO_PIN: 5
- BOARD_SPI1_SCK_PIN: 6
- BOARD_SPI2_NSS_PIN: 31
- BOARD_SPI2_MOSI_PIN: 28
- BOARD_SPI2_MISO_PIN: 29
- BOARD_SPI2_SCK_PIN: 30
- BOARD_JTMS_SWDIO_PIN: 22
- BOARD_JTCK_SWCLK_PIN: 21
- BOARD_JTDI_PIN: 20
- BOARD_JTDO_PIN: 19
- BOARD_NJTRST_PIN: 18
Источник <http://static.leaflabs.com/pub/leaflabs/maple-docs/latest/hardware/maple-mini.html>
