diff options
Diffstat (limited to 'nuttx/arch/arm/src/lpc17xx/lpc17_internal.h')
| -rwxr-xr-x | nuttx/arch/arm/src/lpc17xx/lpc17_internal.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/nuttx/arch/arm/src/lpc17xx/lpc17_internal.h b/nuttx/arch/arm/src/lpc17xx/lpc17_internal.h index b6e9ce3b0..e5321acef 100755 --- a/nuttx/arch/arm/src/lpc17xx/lpc17_internal.h +++ b/nuttx/arch/arm/src/lpc17xx/lpc17_internal.h @@ -169,6 +169,15 @@ #define GPIO_PIN31 (31 << GPIO_PIN_SHIFT) /* GPIO pin definitions *************************************************************/ +/* NOTE that functions have a alternate pins that can be selected. These alternates + * are identified with a numerica suffix like _1, _2, or _3. Your board.h file + * should select the correct alternative for your board by including definitions + * such as: + * + * #define GPIO_UART1_RXD GPIO_UART1_RXD_1 + * + * (without the suffix) + */ #define GPIO_CAN1_RD_1 (GPIO_ALT1 | GPIO_PULLUP | GPIO_PORT0 | GPIO_PIN0) #define GPIO_UART3_TXD_1 (GPIO_ALT2 | GPIO_PULLUP | GPIO_PORT0 | GPIO_PIN0) |