Nxp chip library routines

CMSIS Library Routines and Details,
LPC1xxx Board Routines
notes started 2018-10-25 THU

LPC11U14 board routines . . .

First search, looking for how NXP demo toggles a given GPIO:

user:~/Downloads/nxp/lpcopen$ grep -nr Board_LED_Toggle ./*

./nxp_lpcxpresso_11u14_board_lib/src/board.c:137:void Board_LED_Toggle(uint8_t LEDNumber)
./nxp_lpcxpresso_11u14_board_lib/inc/board_api.h:112:void Board_LED_Toggle(uint8_t LEDNumber);
./nxp_lpcxpresso_11u14_periph_clkout/example/src/clkout.c:77:		Board_LED_Toggle(0);
./nxp_lpcxpresso_11u14_periph_pinint/example/src/pinint.c:187:		Board_LED_Toggle(0);
./nxp_lpcxpresso_11u14_periph_uart/example/src/uart.c:135:				Board_LED_Toggle(0);/* Toggle LED if the TX FIFO is full */
./nxp_lpcxpresso_11u14_periph_watchdog/example/src/watchdog.c:65:		Board_LED_Toggle(0);
./nxp_lpcxpresso_11u14_periph_watchdog/example/src/watchdog.c:72:	Board_LED_Toggle(0);

The routine itself in file ~/Downloads/nxp/lpcopen/nxp_lpcxpresso_11u14_board_lib/src/board.c:

    137 void Board_LED_Toggle(uint8_t LEDNumber)
    138 {^M
    139         if (LEDNumber == 0)^M
    140                 Chip_GPIO_SetPinToggle(LPC_GPIO, 0, 7);
    141 }

Next search:

$ grep -nr Chip_GPIO_SetPinToggle ./*

user:~/Downloads/nxp/lpcopen$ grep -nr Chip_GPIO_SetPinToggle ./*
./lpc_chip_11uxx_lib/inc/gpio_11xx_1.h:447:STATIC INLINE void Chip_GPIO_SetPinToggle(LPC_GPIO_T *pGPIO, uint8_t port, uint8_t pin)
Binary file ./nxp_lpcxpresso_11u14_board_lib/src/.board.c.swp matches
./nxp_lpcxpresso_11u14_board_lib/src/board.c:140:		Chip_GPIO_SetPinToggle(LPC_GPIO, 0, 7);

And the lower level routine itself in file ./lpc_chip_11uxx_lib/inc/gpio_11xx_1.h:

    438 /**^M
    439  * @brief       Toggle an individual GPIO output pin to the opposite state^M
    440  * @param       pGPIO   : The base of GPIO peripheral on the chip^M
    441  * @param       port    : GPIO Port number where @a pin is located^M
    442  * @param       pin             : pin number (0..n) to toggle^M
    443  * @return      None^M
    444  * @note        Any bit set as a '0' will not have it's state changed. This only^M
    445  * applies to ports configured as an output.^M
    446  */^M
    447 STATIC INLINE void Chip_GPIO_SetPinToggle(LPC_GPIO_T *pGPIO, uint8_t port, uint8_t pin)^M
    448 {^M
    449         pGPIO->NOT[port] = (1 << pin);^M
    450 }^M

So where is pGPIO defined?

^ LPC_GPIO_TYPEDEF

$ pwd

.../Firmware/V1_1$

$ grep -nr LPC_GPIO_TypeDef ./* | grep LPC11

./LPC11xx.h:295:} LPC_GPIO_TypeDef;
./LPC11xx.h:490:#define LPC_GPIO0             ((LPC_GPIO_TypeDef   *) LPC_GPIO0_BASE )
./LPC11xx.h:491:#define LPC_GPIO1             ((LPC_GPIO_TypeDef   *) LPC_GPIO1_BASE )
./LPC11xx.h:492:#define LPC_GPIO2             ((LPC_GPIO_TypeDef   *) LPC_GPIO2_BASE )
./LPC11xx.h:493:#define LPC_GPIO3             ((LPC_GPIO_TypeDef   *) LPC_GPIO3_BASE )
Binary file ./Release/Obj/sysconfig_LPC11xx.pbi matches
./initial-firmware-works/Unit_Test/apptask/LPC11xx.h:192:} LPC_GPIO_TypeDef;
./initial-firmware-works/Unit_Test/apptask/LPC11xx.h:204:extern LPC_GPIO_TypeDef gpio;
./initial-firmware-works/Unit_Test/px3_system/LPC11xx.h:192:} LPC_GPIO_TypeDef;
./initial-firmware-works/Unit_Test/px3_system/LPC11xx.h:204:extern LPC_GPIO_TypeDef gpio;
./initial-firmware-works/FloatingPoint/LPC11xx.h:295:} LPC_GPIO_TypeDef;
./initial-firmware-works/FloatingPoint/LPC11xx.h:490:#define LPC_GPIO0             ((LPC_GPIO_TypeDef   *) LPC_GPIO0_BASE )
./initial-firmware-works/FloatingPoint/LPC11xx.h:491:#define LPC_GPIO1             ((LPC_GPIO_TypeDef   *) LPC_GPIO1_BASE )
./initial-firmware-works/FloatingPoint/LPC11xx.h:492:#define LPC_GPIO2             ((LPC_GPIO_TypeDef   *) LPC_GPIO2_BASE )
./initial-firmware-works/FloatingPoint/LPC11xx.h:493:#define LPC_GPIO3             ((LPC_GPIO_TypeDef   *) LPC_GPIO3_BASE )
./initial-firmware-works/Obsolete (FixedPoint)/LPC11xx.h:295:} LPC_GPIO_TypeDef;
./initial-firmware-works/Obsolete (FixedPoint)/LPC11xx.h:490:#define LPC_GPIO0             ((LPC_GPIO_TypeDef   *) LPC_GPIO0_BASE )
./initial-firmware-works/Obsolete (FixedPoint)/LPC11xx.h:491:#define LPC_GPIO1             ((LPC_GPIO_TypeDef   *) LPC_GPIO1_BASE )
./initial-firmware-works/Obsolete (FixedPoint)/LPC11xx.h:492:#define LPC_GPIO2             ((LPC_GPIO_TypeDef   *) LPC_GPIO2_BASE )
./initial-firmware-works/Obsolete (FixedPoint)/LPC11xx.h:493:#define LPC_GPIO3             ((LPC_GPIO_TypeDef   *) LPC_GPIO3_BASE )