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arch/arm/src/lpc54xx: Complete coding of the I2C driver. It is not yet functional and has not yet been seriously tested. config/lpcxpresso-lpc54628: Add support for I2C2 and for the I2C tool to the nsh configuration.
This commit is contained in:
Gregory Nutt
@@ -313,6 +313,8 @@
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#define I2C_SLAVE_STATE_RXAVAIL (1) /* Received data is available (Slave Receiver mode) */
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#define I2C_SLAVE_STATE_TXOK (2) /* Data can be transmitted (Slave Transmitter mode) */
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/* Interrupt status, set and read, and clear registers */
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#define I2C_INT_MSTPENDING (1 << 0) /* Bit 0 Master Pending interrupt */
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#define I2C_STAT_MSTSTATE_SHIFT (1) /* Bits 1-3: Master State code (status only) */
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#define I2C_STAT_MSTSTATE_MASK (7 << I2C_STAT_MSTSTATE_SHIFT)
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@@ -345,7 +347,7 @@
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#define I2C_INT_EVENTTIMEOUT (1 << 24) /* Bit 24: Event time-out interrupt */
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#define I2C_INT_SCLTIMEOUT (1 << 25) /* Bit 25: SCL time-out interrupt */
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#define I2C_INT_MSTPENDING (1 << 0) /* Bit 0 Master Pending interrupt */
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#define I2C_INT_MSTPENDING (1 << 0) /* Bit 0 Master Pending interrupt */
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#define I2C_INT_MSTARBLOSS (1 << 4) /* Bit 4: Master Arbitration Loss interrupt */
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#define I2C_INT_MSTSTSTPERR (1 << 6) /* Bit 6: Master Start/Stop Error interrupt */
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#define I2C_INT_SLVPENDING (1 << 8) /* Bit 8: Slave Pending interrupt */
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@@ -360,7 +362,11 @@
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#define I2C_INT_ALL 0x030b8951
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/* Time-out value */
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#define I2C_TIMEOUT_
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#define I2C_TIMEOUT_SHIFT (0) /* Bits 0-15: Time out value
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* Bits 0-3 hardwired to 0xff */
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#define I2C_TIMEOUT_MASK (0xffff << I2C_TIMEOUT_SHIFT)
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# define I2C_TIMEOUT(n) ((uint32_t)((n)-1) << I2C_TIMEOUT_SHIFT)
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/* Clock pre-divider for the entire I2C interface */
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@@ -368,9 +374,6 @@
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#define I2C_CLKDIV_MASK (0xffff << I2C_CLKDIV_SHIFT)
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# define I2C_CLKDIV(n) ((uint32_t)((n)-1) << I2C_CLKDIV_SHIFT)
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/* Interrupt status register for shared functions */
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#define I2C_INTSTAT_
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/* Master control */
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#define I2C_MSTCTL_MSTCONTINUE (1 << 0) /* Bit 0: Master Continue */
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@@ -388,7 +391,11 @@
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# define I2C_MSTTIME_SCLHIGH(n) ((uint32_t)((n)-2) << I2C_MSTTIME_SCLHIGH_SHIFT)
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/* Combined Master receiver and transmitter data */
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#define I2C_MSTDAT_
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#define I2C_MSTDAT_SHIFT (0) /* Bits 0-7: Master function data */
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#define I2C_MSTDAT_MASK (0xff << I2C_MSTDAT_SHIFT)
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# define I2C_MSTDAT(n) ((uint32_t)(n) << I2C_MSTDAT_SHIFT)
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/* Slave control */
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#define I2C_SLVCTL_
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/* Combined Slave receiver and transmitter data */
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@@ -184,11 +184,11 @@
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#undef HAVE_I2C_MASTER_DEVICE
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#if defined(CONFIG_LPC54_I2C0_MASTER) || defined(CONFIG_LPC54_I2C1_MASTER) || \
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defined(CONFIG_LPC54_I2C1_MASTER) || defined(CONFIG_LPC54_I2C3_MASTER) || \
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defined(CONFIG_LPC54_I2C_MASTER4) || defined(CONFIG_LPC54_I2C5_MASTER) || \
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defined(CONFIG_LPC54_I2C2_MASTER) || defined(CONFIG_LPC54_I2C3_MASTER) || \
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defined(CONFIG_LPC54_I2C4_MASTER) || defined(CONFIG_LPC54_I2C5_MASTER) || \
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defined(CONFIG_LPC54_I2C6_MASTER) || defined(CONFIG_LPC54_I2C7_MASTER) || \
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defined(CONFIG_LPC54_I2C8_MASTER) || defined(CONFIG_LPC54_I2C9_MASTER)
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# define HAVE_MASTER_I2C_MASTER_DEVICE 1
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# define HAVE_I2C_MASTER_DEVICE 1
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#endif
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/* Check if we have an SPI device */
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File diff suppressed because it is too large
Load Diff
@@ -46,6 +46,23 @@ STATUS
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horizontal elongation.
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2017-12-14: Corrected a misconception about how the video data lines
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were configured. Now the LCD appears to be fully functional.
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2017-12-15: Added an I2C driver. This is the first step on the road
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to getting support for the capacitive touchscreen on the TFT panel.
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Not yet functional:
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nsh> i2c dev -b 2 3 77
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0 1 2 3 4 5 6 7 8 9 a b c d e f
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00: -- -- -- -- -- -- -- -- -- -- -- -- --
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10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
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20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
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30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
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40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
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50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
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60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
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70: -- -- -- -- -- -- -- --
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I believe that the on-board Accelerometer, Audio Codec, and touch panel controller should have been detected (but perhaps that are not properly
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powered in this configuration?)
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Configurations
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==============
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@@ -118,7 +135,7 @@ Configurations
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as NSH built-in applications.
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NOTES:
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1, This configuration enables SDRAM to hold the LCD framebuffer and
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1. This configuration enables SDRAM to hold the LCD framebuffer and
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enables the LPC54xx LCD driver in order to support the LPCXpresso's
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TFT panel. In this configuration, the framebuffer resides in the
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the lower half megabyte of SDRAM beginning at address 0xa0000000
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@@ -179,3 +196,20 @@ Configurations
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RAMTest: Pattern test: a0000000 16777216 33333333 cccccccc
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RAMTest: Address-in-address test: a0000000 16777216
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nsh>
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3. I2C2 is enabled (will be used with the capacitive touchscreen). In
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order to verify I2C functionality, the I2C tool at apps/system/i2ctool
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is enabled in this configuration.
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nsh> i2c bus
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BUS EXISTS?
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Bus 0: NO
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Bus 1: NO
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Bus 2: YES
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Bus 3: NO
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Bus 4: NO
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Bus 5: NO
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Bus 6: NO
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Bus 7: NO
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Bus 8: NO
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Bus 9: NO
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@@ -173,11 +173,16 @@
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# define BOARD_SYSTICK_CLOCK (BOARD_AHB_FREQUENCY / BOARD_SYSTICKCLKDIV)
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#endif
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/* Flexcomm0: REVIST */
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/* Flexcomm0: USART0 (REVIST) */
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#define BOARD_FLEXCOMM0_CLKSEL SYSCON_FCLKSEL_FRO12M
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#define BOARD_FLEXCOMM0_FCLK LPC54_FRO_12MHZ
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/* Flexcomm2: I2C2 (REVIST) */
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#define BOARD_FLEXCOMM2_CLKSEL SYSCON_FCLKSEL_FRO12M
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#define BOARD_FLEXCOMM2_FCLK LPC54_FRO_12MHZ
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/* EMC */
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#ifdef BOARD_220MHz
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@@ -273,6 +278,41 @@
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#define GPIO_USART0_RXD (GPIO_FC0_RXD_SDA_MOSI_2 | GPIO_FILTER_OFF)
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#define GPIO_USART0_TXD (GPIO_FC0_TXD_SCL_MISO_2 | GPIO_FILTER_OFF)
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/* Flexomm2/I2C
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*
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* For I2C:
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* Type A & D pins need:
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* GPIO_OPENDRAIN + GPIO_FILTER_OFF
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* Type I pins need for Standard mode I2C need:
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* GPIO_FILTER_OFF + GPIO_I2C_FILTER_ON + GPIO_I2CDRIVE_LOW
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* Type I pins need for fast speed I2C need:
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* GPIO_FILTER_OFF + GPIO_I2C_FILTER_ON or OFF +
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* GPIO_I2CDRIVE_LOW or HIGH
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* Type I pins need for high speed I2C need:
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* GPIO_FILTER_OFF + GPIO_I2C_FILTER_OFF + GPIO_I2CDRIVE_HIGH
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*
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* The touchscreen controller is on I2C2: SCL P3.24, SDA P3.23. These are
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* both Type D/I pins.
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*/
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#if defined(CONFIG_LPC54_I2C_FAST)
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# define _I2CFILTER GPIO_I2C_FILTER_OFF
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# define _I2CDRIVE GPIO_I2CDRIVE_HIGH
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#elif defined(CONFIG_LPC54_I2C_HIGH)
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# define _I2CFILTER GPIO_I2C_FILTER_OFF
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# define _I2CDRIVE GPIO_I2CDRIVE_HIGH
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#else
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# define _I2CFILTER GPIO_I2C_FILTER_ON
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# define _I2CDRIVE GPIO_I2CDRIVE_LOW
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#endif
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#define GPIO_I2C2_SCL (GPIO_FC2_RTS_SCL_SSEL1_2 | \
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GPIO_FILTER_OFF | _I2CFILTER | \
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_I2CDRIVE)
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#define GPIO_I2C2_SDA (GPIO_FC2_CTS_SDA_SSEL0_2 | \
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GPIO_FILTER_OFF | _I2CFILTER | \
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_I2CDRIVE)
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/* LCD
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*
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* There are no alternatives for LCD pins except for the VD0-VD3 pins.
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@@ -13,8 +13,11 @@ CONFIG_FAT_LCNAMES=y
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CONFIG_FAT_LFN=y
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CONFIG_FS_FAT=y
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CONFIG_FS_PROCFS=y
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CONFIG_I2C=y
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CONFIG_I2CTOOL_MAXBUS=9
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CONFIG_LPC54_EMC_DYNAMIC_CS0=y
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CONFIG_LPC54_EMC=y
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CONFIG_LPC54_I2C2_MASTER=y
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CONFIG_LPC54_USART0=y
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CONFIG_MAX_TASKS=16
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CONFIG_MAX_WDOGPARMS=2
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@@ -38,6 +41,7 @@ CONFIG_SDCLONE_DISABLE=y
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CONFIG_START_DAY=2
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CONFIG_START_MONTH=12
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CONFIG_SYMTAB_ORDEREDBYNAME=y
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CONFIG_SYSTEM_I2CTOOL=y
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CONFIG_SYSTEM_RAMTEST=y
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CONFIG_TASK_NAME_SIZE=0
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CONFIG_USART0_SERIAL_CONSOLE=y
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@@ -44,9 +44,94 @@
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#include <syslog.h>
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#include <nuttx/video/fb.h>
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#include <nuttx/i2c/i2c_master.h>
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#include "lpc54_config.h"
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#include "lpc54_i2c_master.h"
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#include "lpcxpresso-lpc54628.h"
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name: lpc54_i2c_register
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*
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* Description:
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* Register one I2C drivers for the I2C tool.
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*
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****************************************************************************/
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#ifdef HAVE_I2CTOOL
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static void lpc54_i2c_register(int bus)
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{
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FAR struct i2c_master_s *i2c;
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int ret;
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i2c = lpc54_i2cbus_initialize(bus);
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if (i2c == NULL)
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{
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syslog(LOG_ERR, "ERROR: Failed to get I2C%d interface\n", bus);
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}
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else
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{
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ret = i2c_register(i2c, bus);
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if (ret < 0)
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{
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syslog(LOG_ERR, "ERROR: Failed to register I2C%d driver: %d\n",
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bus, ret);
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lpc54_i2cbus_uninitialize(i2c);
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}
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}
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}
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#endif
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/****************************************************************************
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* Name: lpc54_i2ctool
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*
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* Description:
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* Register I2C drivers for the I2C tool.
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*
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****************************************************************************/
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#ifdef HAVE_I2CTOOL
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static void lpc54_i2ctool(void)
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{
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#ifdef CONFIG_LPC54_I2C0_MASTER
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lpc54_i2c_register(0);
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#endif
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#ifdef CONFIG_LPC54_I2C1_MASTER
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lpc54_i2c_register(1);
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#endif
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#ifdef CONFIG_LPC54_I2C2_MASTER
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lpc54_i2c_register(2);
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#endif
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#ifdef CONFIG_LPC54_I2C3_MASTER
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lpc54_i2c_register(3);
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#endif
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#ifdef CONFIG_LPC54_I2C4_MASTER
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lpc54_i2c_register(4);
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#endif
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#ifdef CONFIG_LPC54_I2C5_MASTER
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lpc54_i2c_register(5);
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#endif
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#ifdef CONFIG_LPC54_I2C6_MASTER
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lpc54_i2c_register(6);
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#endif
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#ifdef CONFIG_LPC54_I2C7_MASTER
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lpc54_i2c_register(7);
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#endif
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#ifdef CONFIG_LPC54_I2C8_MASTER
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lpc54_i2c_register(8);
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#endif
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#ifdef CONFIG_LPC54_I2C9_MASTER
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lpc54_i2c_register(9);
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#endif
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}
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#else
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# define lpc54_i2ctool()
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#endif
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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@@ -79,6 +164,10 @@ int lpc54_bringup(void)
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}
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#endif
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/* Register I2C drivers on behalf of the I2C tool */
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lpc54_i2ctool();
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#ifdef CONFIG_VIDEO_FB
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/* Initialize and register the framebuffer driver */
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@@ -43,10 +43,21 @@
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#include <nuttx/config.h>
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#include <nuttx/compiler.h>
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#include "lpc54_config.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#define HAVE_I2CTOOL 1
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/* Do we need to register I2C drivers on behalf of the I2C tool? */
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#if !defined(CONFIG_SYSTEM_I2CTOOL) || !defined(CONFIG_I2C_DRIVER) || \
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!defined(HAVE_I2C_MASTER_DEVICE)
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# undef HAVE_I2CTOOL
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#endif
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/* LED definitions **********************************************************/
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/* The LPCXpress-LPC54628 has three user LEDs: D9, D11, and D12. These
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* LEDs are for application use. They are illuminated when the driving
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