SAM4L Xplained SLCD driver is complete
This commit is contained in:
Gregory Nutt
parent
b41c96e1f8
commit
8959fffedc
@ -5030,3 +5030,5 @@
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in (2013-6-21).
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* drivers/net/enc28j60.c: Change buffer ordering to work around Errata
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#5. From Dave (ziggurat29, 2013-6-22).
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* configs/sam4l-xplained/src/sam_slcd.c: LED1 segment LCD module is now
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functional (2013-6-23).
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@ -56,6 +56,9 @@
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#define SAM_LCDCA_TIM_OFFSET 0x0008 /* Timing Register */
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#define SAM_LCDCA_SR_OFFSET 0x000c /* Status Register */
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#define SAM_LCDCA_SCR_OFFSET 0x0010 /* Status Clear Register */
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#define SAM_LCDCA_DRL_OFFSET(n) (0x0014+((n)<<3))
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#define SAM_LCDCA_DRH_OFFSET(n) (0x0018+((n)<<3))
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#define SAM_LCDCA_DRL0_OFFSET 0x0014 /* Data Register Low 0 */
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#define SAM_LCDCA_DRH0_OFFSET 0x0018 /* Data Register High 0 */
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#define SAM_LCDCA_DRL1_OFFSET 0x001c /* Data Register Low 1 */
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@ -64,6 +67,7 @@
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#define SAM_LCDCA_DRH2_OFFSET 0x0028 /* Data Register High 2 */
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#define SAM_LCDCA_DRL3_OFFSET 0x002c /* Data Register Low 3 */
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#define SAM_LCDCA_DRH3_OFFSET 0x0030 /* Data Register High 3 */
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#define SAM_LCDCA_IADR_OFFSET 0x0034 /* Indirect Access Data Register */
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#define SAM_LCDCA_BCFG_OFFSET 0x0038 /* Blink Configuration Register */
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#define SAM_LCDCA_CSRCFG_OFFSET 0x003c /* Circular Shift Register Configuration */
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@ -85,6 +89,9 @@
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#define SAM_LCDCA_TIM (SAM_LCDCA_BASE+SAM_LCDCA_TIM_OFFSET)
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#define SAM_LCDCA_SR (SAM_LCDCA_BASE+SAM_LCDCA_SR_OFFSET)
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#define SAM_LCDCA_SCR (SAM_LCDCA_BASE+SAM_LCDCA_SCR_OFFSET)
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#define SAM_LCDCA_DRL(n) (SAM_LCDCA_BASE+SAM_LCDCA_DRL_OFFSET(n))
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#define SAM_LCDCA_DRH(n) (SAM_LCDCA_BASE+SAM_LCDCA_DRH_OFFSET(n))
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#define SAM_LCDCA_DRL0 (SAM_LCDCA_BASE+SAM_LCDCA_DRL0_OFFSET)
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#define SAM_LCDCA_DRH0 (SAM_LCDCA_BASE+SAM_LCDCA_DRH0_OFFSET)
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#define SAM_LCDCA_DRL1 (SAM_LCDCA_BASE+SAM_LCDCA_DRL1_OFFSET)
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@ -93,6 +100,7 @@
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#define SAM_LCDCA_DRH2 (SAM_LCDCA_BASE+SAM_LCDCA_DRH2_OFFSET)
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#define SAM_LCDCA_DRL3 (SAM_LCDCA_BASE+SAM_LCDCA_DRL3_OFFSET)
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#define SAM_LCDCA_DRH3 (SAM_LCDCA_BASE+SAM_LCDCA_DRH3_OFFSET)
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#define SAM_LCDCA_IADR (SAM_LCDCA_BASE+SAM_LCDCA_IADR_OFFSET)
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#define SAM_LCDCA_BCFG (SAM_LCDCA_BASE+SAM_LCDCA_BCFG_OFFSET)
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#define SAM_LCDCA_CSRCFG (SAM_LCDCA_BASE+SAM_LCDCA_CSRCFG_OFFSET)
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@ -755,7 +755,7 @@ Configuration sub-directories
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This is a test
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nsh>
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1. If the LCD1 module is connected to the SAM4L Xplained Pro, then
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2. If the LCD1 module is connected to the SAM4L Xplained Pro, then
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support for the SLCDt can be enabled by making the following
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changes to the configuration:
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@ -784,3 +784,6 @@ Configuration sub-directories
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Application Configuration -> NSH Library
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CONFIG_NSH_ARCHINIT=y
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NOTE: In order to use the segment LCD you *must* open the VLCD_A and
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VLCD_BC jumpers or the SLD will not be powered!
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@ -115,6 +115,7 @@
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#define SLCD_NROWS 1
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#define SLCD_NCHARS 5
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#define SLCD_NBARS 4
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#define SLCD_MAXCONTRAST 63
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#define BOARD_SLCD_NCOM 4
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@ -216,6 +217,37 @@
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#define SLCD_NG 8 /* Number of 'G' segments G0-G7 */
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#define SLCD_NE 8 /* Number of 'E' segments G0-G7 */
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/* Named pixels */
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#define SLCD_MINUS (&g_binfo[0])
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#define SLCD_H (&g_binfo[1])
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#define SLCD_M (&g_binfo[2])
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#define SLCD_DP0 (&g_binfo[3])
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#define SLCD_DP1 (&g_binfo[4])
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#define SLCD_DP2 (&g_binfo[5])
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#define SLCD_DP3 (&g_binfo[6])
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#define SLCD_DP4 (&g_binfo[7])
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#define SLCD_CENTIGRADE (&g_binfo[8])
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#define SLCD_FAHRENHEIT (&g_binfo[9])
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#define SLCD_ATMEL (&g_ginfo[0])
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#define SLCD_BAR0 (&g_ginfo[1])
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#define SLCD_BAR1 (&g_ginfo[2])
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#define SLCD_BAR2 (&g_ginfo[3])
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#define SLCD_BAR3 (&g_ginfo[4])
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#define SLCD_COLON (&g_ginfo[5])
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#define SLCD_USB (&g_ginfo[6])
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#define SLCD_PAY (&g_ginfo[7])
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#define SLCD_RNG0 (&g_einfo[0])
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#define SLCD_RNG1 (&g_einfo[1])
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#define SLCD_RNG2 (&g_einfo[2])
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#define SLCD_RNG3 (&g_einfo[3])
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#define SLCD_MV (&g_einfo[4])
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#define SLCD_V (&g_einfo[5])
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#define SLCD_PM (&g_einfo[6])
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#define SLCD_AM (&g_einfo[7])
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/* Debug ********************************************************************/
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#ifdef CONFIG_DEBUG_LCD
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@ -276,17 +308,13 @@ static void slcd_dumpslcd(FAR const char *msg);
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static void slcd_clear(void);
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#endif
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static void slcd_setpixel(FAR const struct slcd_pixel_s *info);
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#if 0 /* Not used */
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static void slcd_clrpixel(FAR const struct slcd_pixel_s *info);
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#endif
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static void slcd_setdp(uint8_t curpos);
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#if 0 /* Not used */
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static void slcd_clrdp(uint8_t curpos);
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#endif
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static inline void slcd_setdp(uint8_t curpos);
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static inline void slcd_clrdp(uint8_t curpos);
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static int slcd_getstream(FAR struct lib_instream_s *instream);
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static uint8_t slcd_getcontrast(void);
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static int slcd_setcontrast(unsigned int contrast);
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static void slcd_writech(uint8_t ch, uint8_t curpos);
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static void slcd_writech(uint8_t ch, uint8_t curpos, uint8_t options);
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static void slcd_action(enum slcdcode_e code, uint8_t count);
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/* Character driver methods */
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@ -403,12 +431,12 @@ static void slcd_dumpslcd(FAR const char *msg)
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lcdvdbg(" CFG: %08x TIM: %08x SR: %08x\n",
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getreg32(SAM_LCDCA_CFG), getreg32(SAM_LCDCA_TIM),
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getreg32(SAM_LCDCA_SR));
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lcdvdbg(" DR0: %08x %08x DR1: %08x %08x\n",
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getreg32(SAM_LCDCA_DRL0), getreg32(SAM_LCDCA_DRH0),
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getreg32(SAM_LCDCA_DRL1), getreg32(SAM_LCDCA_DRH1));
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lcdvdbg(" DR2: %08x %08x DR3: %08x %08x\n",
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getreg32(SAM_LCDCA_DRL2), getreg32(SAM_LCDCA_DRH2),
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getreg32(SAM_LCDCA_DRL3), getreg32(SAM_LCDCA_DRH3));
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lcdvdbg(" DR0: %02x %08x DR1: %02x %08x\n",
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getreg32(SAM_LCDCA_DRH0), getreg32(SAM_LCDCA_DRL0),
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getreg32(SAM_LCDCA_DRH1), getreg32(SAM_LCDCA_DRL1));
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lcdvdbg(" DR2: %02x %08x DR3: %02x %08x\n",
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getreg32(SAM_LCDCA_DRH2), getreg32(SAM_LCDCA_DRL2),
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getreg32(SAM_LCDCA_DRH3), getreg32(SAM_LCDCA_DRL3));
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lcdvdbg(" BCFG: %08x CSRCFG: %08x CMCFG: %08x ACMCFG: %08x\n",
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getreg32(SAM_LCDCA_BCFG), getreg32(SAM_LCDCA_CSRCFG),
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getreg32(SAM_LCDCA_CMCFG), getreg32(SAM_LCDCA_ACMCFG));
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@ -442,7 +470,7 @@ static void slcd_setpixel(FAR const struct slcd_pixel_s *info)
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uintptr_t regaddr;
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uint32_t regval;
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regaddr = info->com ? SAM_LCDCA_DRL0 : SAM_LCDCA_DRL3;
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regaddr = SAM_LCDCA_DRL(info->com);
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regval = getreg32(regaddr);
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regval |= (1 << info->segment);
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putreg32(regval, regaddr);
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@ -452,24 +480,22 @@ static void slcd_setpixel(FAR const struct slcd_pixel_s *info)
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* Name: slcd_clrpixel
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****************************************************************************/
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#if 0 /* Not used */
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static void slcd_clrpixel(FAR const struct slcd_pixel_s *info)
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{
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uintptr_t regaddr;
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uint32_t regval;
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regaddr = info->com ? SAM_LCDCA_DRL0 : SAM_LCDCA_DRL3;
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regaddr = SAM_LCDCA_DRL(info->com);
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regval = getreg32(regaddr);
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regval &= ~(1 << info->segment);
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putreg32(regval, regaddr);
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}
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#endif
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/****************************************************************************
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* Name: slcd_setdp
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****************************************************************************/
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static void slcd_setdp(uint8_t curpos)
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static inline void slcd_setdp(uint8_t curpos)
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{
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/* Set the decimal point before the current cursor position
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*
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@ -478,15 +504,13 @@ static void slcd_setdp(uint8_t curpos)
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*/
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slcd_setpixel(&g_binfo[curpos + 3]);
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g_slcdstate.options[curpos] |= SLCD_DP;
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}
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/****************************************************************************
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* Name: slcd_clrdp
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****************************************************************************/
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#if 0 /* Not used */
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static void slcd_clrdp(uint8_t curpos)
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static inline void slcd_clrdp(uint8_t curpos)
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{
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/* Set the decimal point before the current cursor position
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*
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@ -495,9 +519,7 @@ static void slcd_clrdp(uint8_t curpos)
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*/
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slcd_clrpixel(&g_binfo[curpos + 3]);
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g_slcdstate.options[curpos] &= ~SLCD_DP;
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}
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#endif
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/****************************************************************************
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* Name: slcd_getstream
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@ -597,7 +619,7 @@ static int slcd_setcontrast(unsigned int contrast)
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* Name: slcd_writech
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****************************************************************************/
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static void slcd_writech(uint8_t ch, uint8_t curpos)
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static void slcd_writech(uint8_t ch, uint8_t curpos, uint8_t options)
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{
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uint8_t segment;
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@ -620,9 +642,21 @@ static void slcd_writech(uint8_t ch, uint8_t curpos)
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putreg32(LCDCA_CMCFG_TDG_14S4C | LCDCA_CMCFG_STSEG(segment), SAM_LCDCA_CMCFG);
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putreg32(ch, SAM_LCDCA_CMDR);
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/* Check if we need to decorate the character with a preceding dot. */
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if ((options & SLCD_DP) != 0)
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{
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slcd_setdp(curpos);
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}
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else
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{
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slcd_clrdp(curpos);
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}
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/* Save these values in the state structure */
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g_slcdstate.buffer[curpos] = ch;
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g_slcdstate.options[curpos] = options;
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slcd_dumpstate("AFTER WRITE");
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}
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@ -681,18 +715,21 @@ static void slcd_action(enum slcdcode_e code, uint8_t count)
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nchars = SLCD_NCHARS - g_slcdstate.curpos;
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nmove = MIN(nchars, count) - 1;
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/* Move all characters after the current cursor position left by 'nmove' characters */
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/* Move all characters after the current cursor position left by
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* 'nmove' characters
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*/
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for (i = g_slcdstate.curpos + nmove; i < SLCD_NCHARS - 1; i++)
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{
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slcd_writech(g_slcdstate.buffer[i-nmove], i);
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slcd_writech(g_slcdstate.buffer[i-nmove], i,
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g_slcdstate.options[i-nmove]);
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}
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/* Erase the last 'nmove' characters on the display */
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for (i = SLCD_NCHARS - nmove; i < SLCD_NCHARS; i++)
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{
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slcd_writech(' ', i);
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slcd_writech(' ', i, 0);
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}
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}
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break;
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@ -717,7 +754,7 @@ static void slcd_action(enum slcdcode_e code, uint8_t count)
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for (i = g_slcdstate.curpos; i < last; i++)
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{
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slcd_writech(' ', i);
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slcd_writech(' ', i, 0);
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}
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}
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break;
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@ -739,7 +776,7 @@ static void slcd_action(enum slcdcode_e code, uint8_t count)
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for (i = g_slcdstate.curpos; i < SLCD_NCHARS; i++)
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{
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slcd_writech(' ', i);
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slcd_writech(' ', i, 0);
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}
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}
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break;
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@ -861,9 +898,9 @@ static ssize_t slcd_write(FAR struct file *filp,
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struct slcd_instream_s instream;
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struct slcdstate_s state;
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enum slcdret_e result;
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bool dotneeded;
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uint8_t ch;
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uint8_t count;
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uint8_t options;
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/* Initialize the stream for use with the SLCD CODEC */
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@ -872,9 +909,13 @@ static ssize_t slcd_write(FAR struct file *filp,
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instream.buffer = buffer;
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instream.nbytes = len;
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/* Initialize the SLCD decode state buffer */
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memset(&state, 0, sizeof(struct slcdstate_s));
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/* Decode and process every byte in the input buffer */
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dotneeded = false;
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options = 0;
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while ((result = slcd_decode(&instream.stream, &state, &ch, &count)) != SLCDRET_EOF)
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{
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lcdvdbg("slcd_decode returned result=%d char=%d count=%d\n",
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@ -903,7 +944,7 @@ static ssize_t slcd_write(FAR struct file *filp,
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/* Ignore dots before control characters (all of them?) */
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dotneeded = false;
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options = 0;
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}
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/* Handle characters decoreated with a preceding period */
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@ -912,7 +953,7 @@ static ssize_t slcd_write(FAR struct file *filp,
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{
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/* The next character will need a dot in front of it */
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dotneeded = true;
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options |= SLCD_DP;
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}
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/* Handle ASCII_DEL */
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@ -922,27 +963,19 @@ static ssize_t slcd_write(FAR struct file *filp,
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/* Perform the foward deletion */
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slcd_action(SLCDCODE_FWDDEL, 1);
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dotneeded = false;
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options = 0;
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}
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/* The rest of the 7-bit ASCII characters are fair game */
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else if (ch < 128)
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{
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lcdvdbg("ch: %c[%02x]\n", ch, ch);
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lcdvdbg("ch: %c[%02x] options: %02x\n", ch, ch, options);
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/* Write the character at the current cursor position */
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slcd_writech(ch, g_slcdstate.curpos);
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/* Check if we need to decorate the character with a preceding
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* dot.
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*/
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if (dotneeded)
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{
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slcd_setdp(g_slcdstate.curpos);
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}
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slcd_writech(ch, g_slcdstate.curpos, options);
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options = 0;
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/* And advance the cursor position */
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@ -997,7 +1030,7 @@ static int slcd_ioctl(FAR struct file *filp, int cmd, unsigned long arg)
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attr->nrows = SLCD_NROWS;
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attr->ncolumns = SLCD_NCHARS;
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attr->nbars = 0;
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attr->nbars = SLCD_NBARS;
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attr->maxcontrast = SLCD_MAXCONTRAST;
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attr->maxbrightness = 0;
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}
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@ -1009,7 +1042,6 @@ static int slcd_ioctl(FAR struct file *filp, int cmd, unsigned long arg)
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* returned
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*/
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case SLCDIOC_CURPOS:
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{
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FAR struct slcd_curpos_s *curpos = (FAR struct slcd_curpos_s *)((uintptr_t)arg);
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@ -1026,6 +1058,53 @@ static int slcd_ioctl(FAR struct file *filp, int cmd, unsigned long arg)
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}
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break;
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/* SLCDIOC_SETBAR: Set bars on a bar display
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*
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* argument: 32-bit bitset, with each bit corresponding to one bar.
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*/
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case SLCDIOC_SETBAR:
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{
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lcdvdbg("SLCDIOC_SETBAR: arg=0x%02lx\n", arg);
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if ((arg & 1) != 0)
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{
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slcd_setpixel(SLCD_RNG0);
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}
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else
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{
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slcd_clrpixel(SLCD_RNG0);
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}
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if ((arg & 2) != 0)
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{
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slcd_setpixel(SLCD_RNG1);
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}
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else
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{
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slcd_clrpixel(SLCD_RNG1);
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}
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if ((arg & 4) != 0)
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{
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slcd_setpixel(SLCD_RNG2);
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}
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else
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{
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slcd_clrpixel(SLCD_RNG2);
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}
|
||||
|
||||
if ((arg & 8) != 0)
|
||||
{
|
||||
slcd_clrpixel(SLCD_RNG3);
|
||||
}
|
||||
else
|
||||
{
|
||||
slcd_setpixel(SLCD_RNG3);
|
||||
}
|
||||
}
|
||||
break;
|
||||
|
||||
/* SLCDIOC_GETCONTRAST: Get the current contrast setting
|
||||
*
|
||||
* argument: Pointer type int that will receive the current contrast
|
||||
@ -1063,7 +1142,6 @@ static int slcd_ioctl(FAR struct file *filp, int cmd, unsigned long arg)
|
||||
}
|
||||
break;
|
||||
|
||||
case SLCDIOC_SETBAR: /* Get bar levels */
|
||||
case SLCDIOC_GETBRIGHTNESS: /* Get the current brightness setting */
|
||||
case SLCDIOC_SETBRIGHTNESS: /* Set the brightness to a new value */
|
||||
default:
|
||||
@ -1219,14 +1297,18 @@ int sam_slcd_initialize(void)
|
||||
|
||||
/* Initialize display memory */
|
||||
|
||||
putreg32(LCDCA_DRL_MASK, SAM_LCDCA_DRL0);
|
||||
putreg32(LCDCA_DRH_MASK, SAM_LCDCA_DRH0);
|
||||
putreg32(LCDCA_DRL_MASK, SAM_LCDCA_DRL1);
|
||||
putreg32(LCDCA_DRH_MASK, SAM_LCDCA_DRH1);
|
||||
putreg32(LCDCA_DRL_MASK, SAM_LCDCA_DRL2);
|
||||
putreg32(LCDCA_DRH_MASK, SAM_LCDCA_DRH2);
|
||||
putreg32(LCDCA_DRL_MASK, SAM_LCDCA_DRL3);
|
||||
putreg32(LCDCA_DRH_MASK, SAM_LCDCA_DRH3);
|
||||
putreg32(0, SAM_LCDCA_DRL0);
|
||||
putreg32(0, SAM_LCDCA_DRH0);
|
||||
putreg32(0, SAM_LCDCA_DRL1);
|
||||
putreg32(0, SAM_LCDCA_DRH1);
|
||||
putreg32(0, SAM_LCDCA_DRL2);
|
||||
putreg32(0, SAM_LCDCA_DRH2);
|
||||
putreg32(0, SAM_LCDCA_DRL3);
|
||||
putreg32(0, SAM_LCDCA_DRH3);
|
||||
|
||||
/* Turn on the Atmel pixel */
|
||||
|
||||
slcd_setpixel(SLCD_ATMEL);
|
||||
|
||||
/* Register the LCD device driver */
|
||||
|
||||
|
||||
@ -1350,7 +1350,6 @@ static int slcd_ioctl(FAR struct file *filp, int cmd, unsigned long arg)
|
||||
* returned
|
||||
*/
|
||||
|
||||
|
||||
case SLCDIOC_CURPOS:
|
||||
{
|
||||
FAR struct slcd_curpos_s *curpos = (FAR struct slcd_curpos_s *)((uintptr_t)arg);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user