在"02第一個程序 LED閃爍" 中我們很快速的由MBED範例建立了LED閃爍。可是操縱的怎麼是LED1? GPIO哪裡去了?
當你選用其中一片開發板時, 像是TT_M4G9，開發板廠商已經把引腳名稱建立好了，像是本文最後的定義。
這些宣告的PinName 你只能將程式包導出(Export)，才能看到完整的程序。"mbed-os\targets\TARGET_TT\TARGET_TT_M4G9"
使用前你必須先建立類
DigitalOut led1(LED1);
之後你就可以使用自建的 led1類來操縱。
https://os.mbed.com/docs/mbed-os/v5.13/apis/digitalout.html
操縱時你可以用 led1.write(0), 連接到GND。或是led1=0。
=================================================================
typedef enum {
// TMPM4G9 Pin Names
PA0 = 0 << 3, PA1, PA2, PA3, PA4, PA5, PA6, PA7,
PB0 = 1 << 3, PB1, PB2, PB3, PB4, PB5, PB6, PB7,
PC0 = 2 << 3, PC1, PC2, PC3, PC4, PC5, PC6, PC7,
PD0 = 3 << 3, PD1, PD2, PD3, PD4, PD5, PD6, PD7,
PE0 = 4 << 3, PE1, PE2, PE3, PE4, PE5, PE6, PE7,
PF0 = 5 << 3, PF1, PF2, PF3, PF4, PF5, PF6, PF7,
PG0 = 6 << 3, PG1, PG2, PG3, PG4, PG5, PG6, PG7,
PH0 = 7 << 3, PH1, PH2, PH3, PH4, PH5, PH6, PH7,
PJ0 = 8 << 3, PJ1, PJ2, PJ3, PJ4, PJ5, PJ6, PJ7,
PK0 = 9 << 3, PK1, PK2, PK3, PK4, PK5, PK6, PK7,
PL0 = 10 << 3, PL1, PL2, PL3, PL4, PL5, PL6, PL7,
PM0 = 11 << 3, PM1, PM2, PM3, PM4, PM5, PM6, PM7,
PN0 = 12 << 3, PN1, PN2, PN3, PN4, PN5, PN6, PN7,
PP0 = 13 << 3, PP1, PP2, PP3, PP4, PP5, PP6, PP7,
PR0 = 14 << 3, PR1, PR2, PR3, PR4, PR5, PR6, PR7,
PT0 = 15 << 3, PT1, PT2, PT3, PT4, PT5,
PU0 = 16 << 3, PU1, PU2, PU3, PU4, PU5, PU6, PU7,
PV0 = 17 << 3, PV1, PV2, PV3, PV4, PV5, PV6, PV7,
PW0 = 18 << 3, PW1, PW2, PW3, PW4, PW5, PW6, PW7,
PY0 = 19 << 3, PY1, PY2, PY3, PY4,
// Other mbed Pin Names
LED0 = PE4,
LED1 = PE5,
LED2 = PE6,
LED3 = PE7,
// External data bus Pin Names
D0 = PJ0,
D1 = PJ1,
D2 = PF4,
D3 = PB2,
D4 = PF5,
D5 = PB4,
D6 = PC2,
D7 = PF6,
D8 = PA4,
D9 = PC4,
D10 = PA6,
D11 = PA3,
D12 = PA2,
D13 = PA1,
D14 = PG2,
D15 = PG3,
// Analogue out pins
A0 = PN0,
A1 = PN1,
A2 = PN2,
A3 = PN3,
A4 = PN4,
A5 = PN5,
// USB2_UART
USBTX = PU0,
USBRX = PU1,
MBEDIF_TXD = USBTX,
MBEDIF_RXD = USBRX,
MBED_CONF_APP_UART0_TX = PE3,
MBED_CONF_APP_UART0_RX = PE2,
// Switches
SW1 = (int)0xFFFFFFFF, //Reset Button
SW2 = PL4, //Push button S2
SW3 = PM0, //DIP switch J7_1
SW4 = PM1, //DIP switch J7_2
USER_BUTTON = PL4,
// I2C pins
SDA = PG2,
SCL = PG3,
I2C_SDA = SDA,
I2C_SCL = SCL,
// SPI pins
SPI_MOSI = D11,
SPI_MISO = D12,
SPI_SCK = D13,
SPI_CS = D10,
// Not connected
NC = (int)0xFFFFFFFF,
} PinName;
作者： jessekuotw， 来源：面包板社区
链接： https://mbb.eet-china.com/blog/uid-me-3888969.html
版权声明：本文为博主原创，未经本人允许，禁止转载！
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curton 2019-8-19 20:28
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