OrgApache/incubator-nuttx
OrgApache
/
incubator-nuttx
mirror of https://github.com/apache/incubator-nuttx.git
1
0
Fork 0
Code Issues Releases Wiki Activity

Added I2C register bit definitions 

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1673 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2009-03-31 22:29:08 +00:00
parent 41839e378b
commit bb54876857
1 changed files with 25 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
arch/z80/src/z8/chip.h
View File

@ -164,6 +164,31 @@
#define Z8_UARTMDSEL_HWREV HX(e0) /* Bits 5-7=7: LIN-UART Hardware Revision */
/* Bits 0-4: Mode dependent status */
/* I2C Status Register Bit Definitions **********************************************/
#if defined(_Z8FMC16) || defined(_Z8F1680)
#else
# define I2C_STAT_NCKI (1 << 0) /* Bit 0: 1=NACK Interrupt */
# define I2C_STAT_DSS (1 << 1) /* Bit 1: 1=Data Shift State */
# define I2C_STAT_TAS (1 << 2) /* Bit 2: 1=Transmit Address State */
# define I2C_STAT_RD (1 << 3) /* Bit 3: 1=Read */
# define I2C_STAT_10B (1 << 4) /* Bit 4: 1=10-Bit Address */
# define I2C_STAT_ACK (1 << 5) /* Bit 5: 1=Acknowledge */
# define I2C_STAT_RDRF (1 << 6) /* Bit 6: 1=Receive Data Register Full */
# define I2C_STAT_TDRE (1 << 7) /* Bit 7: 1=Transmit Data Register Empty */
#endif
/* I2C Control Register Bit Definitions *********************************************/
#define I2C_CTL_FILTEN (1 << 0) /* Bit 0: 1=I2C Signal Filter Enable */
#define I2C_CTL_FLUSH (1 << 1) /* Bit 1: 1=Flush Data */
#define I2C_CTL_NAK (1 << 2) /* Bit 2: 1=Send NAK */
#define I2C_CTL_TXI (1 << 3) /* Bit 3: 1=Enable TDRE interrupts */
#define I2C_CTL_BIRQ (1 << 4) /* Bit 4: 1=Baud Rate Generator Interrupt Request */
#define I2C_CTL_STOP (1 << 5) /* Bit 5: 1=Send Stop Condition */
#define I2C_CTL_START (1 << 6) /* Bit 6: 1=Send Start Condition */
#define I2C_CTL_IEN (1 << 7) /* Bit 7: 1=I2C Enable */
/* Register access macros ***********************************************************
*
* The register access mechanism provided in ez8.h differs from the useful in other