Since my first post I changed the I2C pins to 53 and 54 (it makes connection to my hardware a little easier. when I tested it there was no activity neither pin. When I allocated the new pins they appeared in the BOARD_I2C_ConfigurePins table, but after I "updated the code" they also appeared in the BOARD_InitPins table. Below is a copy of pin_mux.c taken from the code windowing the "Pins" perspective.
/***********************************************************************************************************************
* This file was generated by the MCUXpresso Config Tools. Any manual edits made to this file
* will be overwritten if the respective MCUXpresso Config Tools is used to update this file.
**********************************************************************************************************************/
/* clang-format off */
/*
* TEXT BELOW IS USED AS SETTING FOR TOOLS *************************************
!!GlobalInfo
product: Pins v15.0
processor: MKL26Z128xxx4
package_id: MKL26Z128VLH4
mcu_data: ksdk2_0
processor_version: 13.0.1
board: FRDM-KL26Z
* BE CAREFUL MODIFYING THIS COMMENT - IT IS YAML SETTINGS FOR TOOLS ***********
*/
/* clang-format on */
#include "fsl_common.h"
#include "fsl_port.h"
#include "pin_mux.h"
/* FUNCTION ************************************************************************************************************
*
* Function Name : BOARD_InitBootPins
* Description : Calls initialization functions.
*
* END ****************************************************************************************************************/
void BOARD_InitBootPins(void)
{
BOARD_InitPins();
}
/* clang-format off */
/*
* TEXT BELOW IS USED AS SETTING FOR TOOLS *************************************
BOARD_InitPins:
- options: {callFromInitBoot: 'true', coreID: core0, enableClock: 'true'}
- pin_list:
- {pin_num: '23', peripheral: UART0, signal: RX, pin_signal: TSI0_CH2/PTA1/UART0_RX/TPM2_CH0}
- {pin_num: '24', peripheral: UART0, signal: TX, pin_signal: TSI0_CH3/PTA2/UART0_TX/TPM2_CH1, direction: OUTPUT}
- {pin_num: '53', peripheral: I2C0, signal: SCL, pin_signal: CMP0_IN2/PTC8/I2C0_SCL/TPM0_CH4/I2S0_MCLK}
- {pin_num: '54', peripheral: I2C0, signal: SDA, pin_signal: CMP0_IN3/PTC9/I2C0_SDA/TPM0_CH5/I2S0_RX_BCLK}
* BE CAREFUL MODIFYING THIS COMMENT - IT IS YAML SETTINGS FOR TOOLS ***********
*/
/* clang-format on */
/* FUNCTION ************************************************************************************************************
*
* Function Name : BOARD_InitPins
* Description : Configures pin routing and optionally pin electrical features.
*
* END ****************************************************************************************************************/
void BOARD_InitPins(void)
{
/* Port A Clock Gate Control: Clock enabled */
CLOCK_EnableClock(kCLOCK_PortA);
/* Port C Clock Gate Control: Clock enabled */
CLOCK_EnableClock(kCLOCK_PortC);
/* PORTA1 (pin 23) is configured as UART0_RX */
PORT_SetPinMux(BOARD_INITPINS_DEBUG_UART_RX_PORT, BOARD_INITPINS_DEBUG_UART_RX_PIN, kPORT_MuxAlt2);
/* PORTA2 (pin 24) is configured as UART0_TX */
PORT_SetPinMux(BOARD_INITPINS_DEBUG_UART_TX_PORT, BOARD_INITPINS_DEBUG_UART_TX_PIN, kPORT_MuxAlt2);
/* PORTC8 (pin 53) is configured as I2C0_SCL */
PORT_SetPinMux(PORTC, 8U, kPORT_MuxAlt2);
/* PORTC9 (pin 54) is configured as I2C0_SDA */
PORT_SetPinMux(PORTC, 9U, kPORT_MuxAlt2);
SIM->SOPT5 = ((SIM->SOPT5 &
/* Mask bits to zero which are setting */
(~(SIM_SOPT5_UART0TXSRC_MASK | SIM_SOPT5_UART0RXSRC_MASK)))
/* UART0 Transmit Data Source Select: UART0_TX pin. */
| SIM_SOPT5_UART0TXSRC(SOPT5_UART0TXSRC_UART_TX)
/* UART0 Receive Data Source Select: UART_RX pin. */
| SIM_SOPT5_UART0RXSRC(SOPT5_UART0RXSRC_UART_RX));
}
/* clang-format off */
/*
* TEXT BELOW IS USED AS SETTING FOR TOOLS *************************************
BOARD_I2C_ConfigurePins:
- options: {coreID: core0, enableClock: 'true'}
- pin_list:
- {pin_num: '53', peripheral: I2C0, signal: SCL, pin_signal: CMP0_IN2/PTC8/I2C0_SCL/TPM0_CH4/I2S0_MCLK}
- {pin_num: '54', peripheral: I2C0, signal: SDA, pin_signal: CMP0_IN3/PTC9/I2C0_SDA/TPM0_CH5/I2S0_RX_BCLK}
* BE CAREFUL MODIFYING THIS COMMENT - IT IS YAML SETTINGS FOR TOOLS ***********
*/
/* clang-format on */
/* FUNCTION ************************************************************************************************************
*
* Function Name : BOARD_I2C_ConfigurePins
* Description : Configures pin routing and optionally pin electrical features.
*
* END ****************************************************************************************************************/
void BOARD_I2C_ConfigurePins(void)
{
/* Port C Clock Gate Control: Clock enabled */
CLOCK_EnableClock(kCLOCK_PortC);
/* PORTC8 (pin 53) is configured as I2C0_SCL */
PORT_SetPinMux(PORTC, 8U, kPORT_MuxAlt2);
/* PORTC9 (pin 54) is configured as I2C0_SDA */
PORT_SetPinMux(PORTC, 9U, kPORT_MuxAlt2);
}
/***********************************************************************************************************************
* EOF
I have also attached the pin_mux.c file from the Project/Board folder. It did not reflect ant of the changes that I had made in the "pins" config tool so I edited it to reflect the changed pin allocation. Why are there two Pin_mux.c files (the two pin_mux.h files are also different).
Referring to the pin configuration code you gave me - Where do I put them and will they conflict with (either of) Pin_mux.c?
This problem is really getting me down.
