--- arch/arm/mach-pxa/hx2750_test.c | 493 +++++++++++++++++++++++++++++----------- 1 file changed, 367 insertions(+), 126 deletions(-) Index: linux-2.6.23/arch/arm/mach-pxa/hx2750_test.c =================================================================== --- linux-2.6.23.orig/arch/arm/mach-pxa/hx2750_test.c 2008-01-20 22:54:41.000000000 +0000 +++ linux-2.6.23/arch/arm/mach-pxa/hx2750_test.c 2008-01-20 23:54:30.000000000 +0000 @@ -14,15 +14,17 @@ #include #include #include -#include +#include #include -#include #include +#include +#include #include #include #include +#include #include #include @@ -32,7 +34,7 @@ static int prodval; /* * Sysfs functions */ -static ssize_t test1_show(struct device *dev, char *buf) +static ssize_t test1_show(struct device *dev, struct device_attribute *attr, char *buf) { unsigned long rp; @@ -55,8 +57,10 @@ static ssize_t test1_show(struct device } extern void tsc2101_print_miscdata(struct device *dev); extern struct platform_device tsc2101_device; +extern void hx2750_tsc2101_send(int read, int command, int *values, int numval); +extern void hx2750_ssp_init2(void); -static ssize_t test1_store(struct device *dev, const char *buf, size_t count) +static ssize_t test1_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { prodval = simple_strtoul(buf, NULL, 10); @@ -67,7 +71,7 @@ static ssize_t test1_store(struct device static DEVICE_ATTR(test1, 0644, test1_show, test1_store); -static ssize_t test2_show(struct device *dev, char *buf) +static ssize_t test2_show(struct device *dev, struct device_attribute *attr, char *buf) { printk(KERN_ERR "SSCR0_P2: %08x\n", SSCR0_P2); printk(KERN_ERR "SSCR1_P2: %08x\n", SSCR1_P2); @@ -94,28 +98,39 @@ static DEVICE_ATTR(test2, 0444, test2_sh extern unsigned int hx2750_egpio_current; -static ssize_t setegpio_show(struct device *dev, char *buf) +static ssize_t setegpio_show(struct device *dev, struct device_attribute *attr, char *buf) { return sprintf(buf, "%x\n",hx2750_egpio_current); } -static ssize_t setegpio_store(struct device *dev, const char *buf, size_t count) +static ssize_t setegpio_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { unsigned int val = simple_strtoul(buf, NULL, 10); - hx2750_set_egpio(1 << val); + hx2750_set_egpio(val); return count; } static DEVICE_ATTR(setegpio, 0644, setegpio_show, setegpio_store); -static ssize_t clregpio_show(struct device *dev, char *buf) +static ssize_t clregpio_show(struct device *dev, struct device_attribute *attr, char *buf) { return sprintf(buf, "%x\n",hx2750_egpio_current); } -static ssize_t gpio_show(struct device *dev, char *buf) +static ssize_t clregpio_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) +{ + unsigned int val = simple_strtoul(buf, NULL, 10); + + hx2750_clear_egpio(val); + + return count; +} + +static DEVICE_ATTR(clregpio, 0644, clregpio_show, clregpio_store); + +static ssize_t gpio_show(struct device *dev, struct device_attribute *attr, char *buf) { int i; @@ -141,19 +156,7 @@ static ssize_t gpio_show(struct device * return sprintf(buf, "EGPIO: %x\n",hx2750_egpio_current); } -static ssize_t clregpio_store(struct device *dev, const char *buf, size_t count) -{ - unsigned int val = simple_strtoul(buf, NULL, 10); - - hx2750_clear_egpio(1 << val); - - return count; -} - -static DEVICE_ATTR(clregpio, 0644, clregpio_show, clregpio_store); - - -static ssize_t gpioclr_store(struct device *dev, const char *buf, size_t count) +static ssize_t gpioclr_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { int prod; prod = simple_strtoul(buf, NULL, 10); @@ -165,7 +168,7 @@ static ssize_t gpioclr_store(struct devi static DEVICE_ATTR(gpioclr, 0644, gpio_show, gpioclr_store); -static ssize_t gpioset_store(struct device *dev, const char *buf, size_t count) +static ssize_t gpioset_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { int prod; prod = simple_strtoul(buf, NULL, 10); @@ -177,47 +180,50 @@ static ssize_t gpioset_store(struct devi static DEVICE_ATTR(gpioset, 0644, gpio_show, gpioset_store); +void do_ds2760(void); -static ssize_t ssp2read_store(struct device *dev, const char *buf, size_t count) +static ssize_t ssp2read_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { - unsigned int val = simple_strtoul(buf, NULL, 16); + //unsigned int val = simple_strtoul(buf, NULL, 16); - printk("Read: %08x\n",hx2750_ssp2_read(val)); + //printk("Read: %08x\n",hx2750_ssp2_read(val)); + do_ds2760(); return count; } -static DEVICE_ATTR(ssp2read, 0200, NULL, ssp2read_store); - -static ssize_t ssp2write_store(struct device *dev, const char *buf, size_t count) +static DEVICE_ATTR(ssp2read, 0200, NULL, ssp2read_store); + +static ssize_t ssp2write_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { - unsigned int val = simple_strtoul(buf, NULL, 16); + //unsigned int val = simple_strtoul(buf, NULL, 16); - printk("Write: %08x\n",hx2750_ssp2_write(val)); + //printk("Write: %08x\n",hx2750_ssp2_write(val)); return count; } static DEVICE_ATTR(ssp2write, 0200, NULL, ssp2write_store); - -static ssize_t sspr_store(struct device *dev, const char *buf, size_t count) +static ssize_t sspr_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { - unsigned long val,ret; + unsigned long val; + int ret; val = simple_strtoul(buf, NULL, 0); hx2750_tsc2101_send(1<<15,val,&ret,1); - printk("Response: %x\n",ret); + printk("Response: %lx\n",ret); return count; } static DEVICE_ATTR(sspr, 0200, NULL, sspr_store); -static ssize_t sspw_store(struct device *dev, const char *buf, size_t count) +static ssize_t sspw_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { - int val,ret; + unsigned long val; + int ret; sscanf(buf, "%lx %lx", &val, &ret); hx2750_tsc2101_send(0,val,&ret,1); @@ -228,31 +234,29 @@ static ssize_t sspw_store(struct device static DEVICE_ATTR(sspw, 0200, NULL, sspw_store); -extern struct pm_ops pxa_pm_ops; extern void pxa_cpu_resume(void); extern unsigned long pxa_pm_pspr_value; +extern void hx2750_send_egpio(unsigned int val); -static int (*pxa_pm_enter_orig)(suspend_state_t state); - -//static struct { -// u32 ffier, fflcr, ffmcr, ffspr, ffisr, ffdll, ffdlh; -//} sys_ctx; +/*static struct { + u32 ffier, fflcr, ffmcr, ffspr, ffisr, ffdll, ffdlh; +} sys_ctx;*/ u32 resstruct[20]; static int hx2750_pxa_pm_enter(suspend_state_t state) { - int i; - u32 save[10]; + //int i; + //u32 save[10]; PWER = 0xC0000003;// | PWER_RTC; PFER = 0x00000003; PRER = 0x00000003; - PGSR0=0x00000018; - PGSR1=0x00000380; - PGSR2=0x00800000; - PGSR3=0x00500400; + PGSR0 = 0x00000018; + PGSR1 = 0x00000380; + PGSR2 = 0x00800000; + PGSR3 = 0x00500400; //PVCR=0x494; or 0x14; //PVCR=0x14; @@ -262,53 +266,57 @@ static int hx2750_pxa_pm_enter(suspend_s //PCFR=0x457; //PCFR=0x70; // Does not resume from sleep - PCFR=0x077; // was 0x477 - PSLR=0xff100004; + PCFR = 0x077; // was 0x477 + PSLR = 0xff100004; - resstruct[0]=0x0000b4e6; - resstruct[1]=0x00000001; - resstruct[2]=virt_to_phys(pxa_cpu_resume); - resstruct[3]=0xffffffff; //value for r0 + resstruct[0] = 0x0000b4e6; + resstruct[1] = 0x00000001; + resstruct[2] = virt_to_phys(pxa_cpu_resume); + resstruct[3] = 0xffffffff; //value for r0 - resstruct[14]=0x00000078; //mcr 15, 0, r0, cr1, cr0, {0} - resstruct[15]=0x00000000; //mcr 15, 0, r0, cr1, cr1, {0} 0xffffffff - resstruct[16]=0xa0000000; //mcr 15, 0, r0, cr2, cr0, {0} 0xa0748000 - resstruct[17]=0x00000001; //mcr 15, 0, r0, cr3, cr0, {0} 0x00000015 - resstruct[18]=0x00000000; //mcr 15, 0, r0, cr13, cr0, {0} 0x00000000 + resstruct[14] = 0x00000078; //mcr 15, 0, r0, cr1, cr0, {0} + resstruct[15] = 0x00000000; //mcr 15, 0, r0, cr1, cr1, {0} 0xffffffff + resstruct[16] = 0xa0000000; //mcr 15, 0, r0, cr2, cr0, {0} 0xa0748000 + resstruct[17] = 0x00000001; //mcr 15, 0, r0, cr3, cr0, {0} 0x00000015 + resstruct[18] = 0x00000000; //mcr 15, 0, r0, cr13, cr0, {0} 0x00000000 pxa_pm_pspr_value=virt_to_phys(&resstruct[0]); - hx2750_send_egpio(3); + //hx2750_send_egpio(3); pxa_gpio_mode(87 | GPIO_OUT | GPIO_DFLT_HIGH); - //sys_ctx.ffier = FFIER; - //sys_ctx.fflcr = FFLCR; - //sys_ctx.ffmcr = FFMCR; - //sys_ctx.ffspr = FFSPR; - //sys_ctx.ffisr = FFISR; - //FFLCR |= 0x80; - //sys_ctx.ffdll = FFDLL; - //sys_ctx.ffdlh = FFDLH; - //FFLCR &= 0xef; + /*printk("Suspending, Bye!\n"); - pxa_pm_enter_orig(state); + sys_ctx.ffier = FFIER; + sys_ctx.fflcr = FFLCR; + sys_ctx.ffmcr = FFMCR; + sys_ctx.ffspr = FFSPR; + sys_ctx.ffisr = FFISR; + FFLCR |= 0x80; + sys_ctx.ffdll = FFDLL; + sys_ctx.ffdlh = FFDLH; + FFLCR &= 0xef;*/ - //FFMCR = sys_ctx.ffmcr; - //FFSPR = sys_ctx.ffspr; - //FFLCR = sys_ctx.fflcr; - //FFLCR |= 0x80; - //FFDLH = sys_ctx.ffdlh; - //FFDLL = sys_ctx.ffdll; - //FFLCR = sys_ctx.fflcr; - //FFISR = sys_ctx.ffisr; - //FFLCR = 0x07; - //FFIER = sys_ctx.ffier; + pxa_pm_enter(state); + + /*FFMCR = sys_ctx.ffmcr; + FFSPR = sys_ctx.ffspr; + FFLCR = sys_ctx.fflcr; + FFLCR |= 0x80; + FFDLH = sys_ctx.ffdlh; + FFDLL = sys_ctx.ffdll; + FFLCR = sys_ctx.fflcr; + FFISR = sys_ctx.ffisr; + FFLCR = 0x07; + FFIER = sys_ctx.ffier; + + printk("Resuming!\n");*/ return 0; } -static irqreturn_t hx2750_charge_int(int irq, void *dev_id, struct pt_regs *regs) +static irqreturn_t hx2750_charge_int(int irq, void *dev_id) { if ((GPLR(HX2750_GPIO_EXTPWR) & GPIO_bit(HX2750_GPIO_EXTPWR)) == 0) { printk("Charging On\n"); @@ -321,19 +329,30 @@ static irqreturn_t hx2750_charge_int(int return IRQ_HANDLED; } - - - -static irqreturn_t hx2750_interrupt(int irq, void *dev_id, struct pt_regs *regs) +static irqreturn_t hx2750_interrupt(int irq, void *dev_id) { printk("Input %d changed.\n", irq-32); return IRQ_HANDLED; } +static int pxa27x_cpu_pm_valid(suspend_state_t state) +{ + return state == PM_SUSPEND_MEM || state == PM_SUSPEND_STANDBY; +} -static int __init hx2750_test_probe(struct device *dev) +static struct platform_suspend_ops hx2750_pm_ops = { + .valid = pxa27x_cpu_pm_valid, + .enter = hx2750_pxa_pm_enter, +}; + +static int __init hx2750_test_probe(struct platform_device *pdev) { + int ret; + + pxa_gpio_mode(86 | GPIO_IN); + pxa_gpio_mode(87 | GPIO_OUT | GPIO_DFLT_HIGH); + pxa_gpio_mode(21 | GPIO_OUT | GPIO_DFLT_HIGH); pxa_gpio_mode(HX2750_GPIO_CHARGE | GPIO_OUT | GPIO_DFLT_HIGH); pxa_gpio_mode(83 | GPIO_OUT | GPIO_DFLT_HIGH); @@ -351,6 +370,7 @@ static int __init hx2750_test_probe(stru pxa_gpio_mode(107 | GPIO_OUT | GPIO_DFLT_LOW); pxa_gpio_mode(114 | GPIO_OUT | GPIO_DFLT_LOW); + pxa_gpio_mode(HX2750_GPIO_BATTCOVER1 | GPIO_IN); pxa_gpio_mode(HX2750_GPIO_BATTCOVER2 | GPIO_IN); pxa_gpio_mode(HX2750_GPIO_CF_IRQ | GPIO_IN); @@ -365,48 +385,37 @@ static int __init hx2750_test_probe(stru pxa_gpio_mode(115 | GPIO_IN); pxa_gpio_mode(119 | GPIO_IN); - request_irq(IRQ_GPIO(HX2750_GPIO_BATLVL), hx2750_interrupt, SA_INTERRUPT, "hx2750test", NULL); - //request_irq(IRQ_GPIO(HX2750_GPIO_CF_WIFIIRQ), hx2750_interrupt, SA_INTERRUPT, "hx2750test", NULL); - request_irq(IRQ_GPIO(80), hx2750_interrupt, SA_INTERRUPT, "hx2750test", NULL); - request_irq(IRQ_GPIO(115), hx2750_interrupt, SA_INTERRUPT, "hx2750test", NULL); - request_irq(IRQ_GPIO(119), hx2750_interrupt, SA_INTERRUPT, "hx2750test", NULL); - request_irq(IRQ_GPIO(HX2750_GPIO_SR_CLK2), hx2750_interrupt, SA_INTERRUPT, "hx2750test", NULL); - - //request_irq(IRQ_GPIO(10), hx2750_interrupt, SA_INTERRUPT, "hx2750test", NULL); - - set_irq_type(IRQ_GPIO(HX2750_GPIO_BATLVL),IRQT_BOTHEDGE); - //set_irq_type(IRQ_GPIO(HX2750_GPIO_CF_WIFIIRQ),IRQT_BOTHEDGE); - set_irq_type(IRQ_GPIO(80),IRQT_BOTHEDGE); - set_irq_type(IRQ_GPIO(115),IRQT_BOTHEDGE); - set_irq_type(IRQ_GPIO(119),IRQT_BOTHEDGE); - set_irq_type(IRQ_GPIO(HX2750_GPIO_SR_CLK2),IRQT_BOTHEDGE); - - //set_irq_type(IRQ_GPIO(10),IRQT_BOTHEDGE); + ret = request_irq(IRQ_GPIO(HX2750_GPIO_BATLVL), hx2750_interrupt, IRQF_DISABLED | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, "hx2750test", NULL); + //ret |= request_irq(IRQ_GPIO(HX2750_GPIO_CF_WIFIIRQ), hx2750_interrupt, IRQF_DISABLED | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, "hx2750test", NULL); + ret |= request_irq(IRQ_GPIO(80), hx2750_interrupt, IRQF_DISABLED | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, "hx2750test", NULL); + ret |= request_irq(IRQ_GPIO(115), hx2750_interrupt, IRQF_DISABLED | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, "hx2750test", NULL); + ret |= request_irq(IRQ_GPIO(119), hx2750_interrupt, IRQF_DISABLED | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, "hx2750test", NULL); + ret |= request_irq(IRQ_GPIO(HX2750_GPIO_SR_CLK2), hx2750_interrupt, IRQF_DISABLED | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, "hx2750test", NULL); printk("hx2750 Test Code Initialized.\n"); - device_create_file(dev, &dev_attr_test1); - device_create_file(dev, &dev_attr_test2); - device_create_file(dev, &dev_attr_setegpio); - device_create_file(dev, &dev_attr_clregpio); - device_create_file(dev, &dev_attr_gpioset); - device_create_file(dev, &dev_attr_gpioclr); - device_create_file(dev, &dev_attr_sspr); - device_create_file(dev, &dev_attr_sspw); - device_create_file(dev, &dev_attr_ssp2read); - device_create_file(dev, &dev_attr_ssp2write); + // FIXME - return values. + ret |= device_create_file(&pdev->dev, &dev_attr_test1); + ret |= device_create_file(&pdev->dev, &dev_attr_test2); + ret |= device_create_file(&pdev->dev, &dev_attr_setegpio); + ret |= device_create_file(&pdev->dev, &dev_attr_clregpio); + ret |= device_create_file(&pdev->dev, &dev_attr_gpioset); + ret |= device_create_file(&pdev->dev, &dev_attr_gpioclr); + ret |= device_create_file(&pdev->dev, &dev_attr_sspr); + ret |= device_create_file(&pdev->dev, &dev_attr_sspw); + ret |= device_create_file(&pdev->dev, &dev_attr_ssp2read); + ret |= device_create_file(&pdev->dev, &dev_attr_ssp2write); - request_irq(HX2750_IRQ_GPIO_EXTPWR, hx2750_charge_int, SA_INTERRUPT, "hx2750_extpwr", NULL); - set_irq_type(HX2750_IRQ_GPIO_EXTPWR, IRQT_BOTHEDGE); + ret |= request_irq(HX2750_IRQ_GPIO_EXTPWR, hx2750_charge_int, IRQF_DISABLED | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, "hx2750_extpwr", NULL); - pxa_pm_enter_orig=pxa_pm_ops.enter; - pxa_pm_ops.enter=hx2750_pxa_pm_enter; + suspend_set_ops(&hx2750_pm_ops); return 0; } -static struct device_driver hx2750_test_driver = { - .name = "hx2750-test", - .bus = &platform_bus_type, +static struct platform_driver hx2750_test_driver = { + .driver = { + .name = "hx2750-test", + }, .probe = hx2750_test_probe, // .remove = hx2750_bl_remove, // .suspend = hx2750_bl_suspend, @@ -416,18 +425,250 @@ static struct device_driver hx2750_test_ static int __init hx2750_test_init(void) { - return driver_register(&hx2750_test_driver); + return platform_driver_register(&hx2750_test_driver); } static void __exit hx2750_test_exit(void) { - driver_unregister(&hx2750_test_driver); + platform_driver_unregister(&hx2750_test_driver); } -module_init(hx2750_test_init); +late_initcall(hx2750_test_init); module_exit(hx2750_test_exit); MODULE_AUTHOR("Richard Purdie "); -MODULE_DESCRIPTION("iPAQ hx2750 Backlight Driver"); +MODULE_DESCRIPTION("iPAQ hx2750 Test Code"); MODULE_LICENSE("GPLv2"); + +/*(SSCR0_TI | (SSCR0_DSS & 0x09 )) , 0, 0, SSCR0_SerClkDiv(212) +Serial Bit Rate = 13Mhz / 106 +122641.5khz +0.0000163s +0.0163ms +Each half clock pulse lasts 16.3us +32.6us pulse length +10 Bit TI Mode*/ + + +static void setportlow(void) +{ + GPCR(87) = GPIO_bit(87); +} + +void setporthigh(void) +{ + GPSR(87) = GPIO_bit(87); +} + +static int readport(void) +{ + if (GPLR(86) & GPIO_bit(86)) + return 1; + return 0; +} + +// Pause for exactly 'tick' number of ticks = 0.25us +static void tickDelay(int tick) +{ + udelay(tick/4); +} +// 'tick' values +static int A,B,C,D,E,F,G,H,I,J; +//----------------------------------------------------------------------------- +// Set the 1-Wire timing to 'standard' (standard=1) or 'overdrive' (standard=0). +// +static void SetSpeed(int standard) +{ + // Standard Speed + A = 6 * 4; + B = 64 * 4; + C = 60 * 4; + D = 10 * 4; + E = 9 * 4; + F = 55 * 4; + G = 0; + H = 480 * 4; + I = 70 * 4; + J = 410 * 4; +} + +//----------------------------------------------------------------------------- +// Generate a 1-Wire reset, return 1 if no presence detect was found, +// return 0 otherwise. +// (NOTE: Does not handle alarm presence from DS2404/DS1994) +// +static int OWTouchReset(void) +{ + int result; + tickDelay(G); + setportlow(); // Drives DQ low + tickDelay(H); + setporthigh(); // Releases the bus + tickDelay(I); + result = readport(); // Sample for presence pulse from slave + tickDelay(J); // Complete the reset sequence recovery + return result; // Return sample presence pulse result +} +//----------------------------------------------------------------------------- +// Send a 1-Wire write bit. Provide 10us recovery time. +// +static void OWWriteBit(int bit) +{ + if (bit) + { + // Write '1' bit + setportlow(); // Drives DQ low + tickDelay(A); + setporthigh(); // Releases the bus + tickDelay(B); // Complete the time slot and 10us recovery + } + else + { + // Write '0' bit + setportlow(); // Drives DQ low + tickDelay(C); + setporthigh(); // Releases the bus + tickDelay(D); + } +} +//----------------------------------------------------------------------------- +// Read a bit from the 1-Wire bus and return it. Provide 10us recovery time. +// +static int OWReadBit(void) +{ + int result; + setportlow(); // Drives DQ low + tickDelay(A); + setporthigh(); // Releases the bus + tickDelay(E); + result = readport(); // Sample the bit value from the slave + tickDelay(F); // Complete the time slot and 10us recovery + return result; +} + + + +//----------------------------------------------------------------------------- +// Write 1-Wire data byte +// +static void OWWriteByte(int data) +{ + int loop; + // Loop to write each bit in the byte, LS-bit first + for (loop = 0; loop < 8; loop++) + { + OWWriteBit(data & 0x01); + // shift the data byte for the next bit + data >>= 1; + } +} +//----------------------------------------------------------------------------- +// Read 1-Wire data byte and return it +// +static int OWReadByte(void) +{ + int loop, result=0; + for (loop = 0; loop < 8; loop++) + { + // shift the result to get it ready for the next bit + result >>= 1; + // if result is one, then set MS bit + if (OWReadBit()) + result |= 0x80; + } + return result; +} +//----------------------------------------------------------------------------- +// Write a 1-Wire data byte and return the sampled result. +// +//static int OWTouchByte(int data) +//{ +// int loop, result=0; +// for (loop = 0; loop < 8; loop++) +// { +// // shift the result to get it ready for the next bit +// result >>= 1; +// // If sending a '1' then read a bit else write a '0' +// if (data & 0x01) +// { +// if (OWReadBit()) +// result |= 0x80; +// } +// else +// OWWriteBit(0); +// // shift the data byte for the next bit +// data >>= 1; +// } +// return result; +//} + +//----------------------------------------------------------------------------- +// Write a block 1-Wire data bytes and return the sampled result in the same +// buffer. +// +//static void OWBlock(unsigned char *data, int data_len) +//{ +// int loop; +// for (loop = 0; loop < data_len; loop++) +// { +// data[loop] = OWTouchByte(data[loop]); +// } +//} +//----------------------------------------------------------------------------- +// Set all devices on 1-Wire to overdrive speed. Return '1' if at least one +// overdrive capable device is detected. +// +//static int OWOverdriveSkip(unsigned char *data, int data_len) +//{ + // set the speed to 'standard' +// SetSpeed(1); + // reset all devices +// if (OWTouchReset()) // Reset the 1-Wire bus +// return 0; // Return if no devices found + // overdrive skip command +// OWWriteByte(0x3C); + // set the speed to 'overdrive' +// SetSpeed(0); + // do a 1-Wire reset in 'overdrive' and return presence result +// return OWTouchReset(); +//} + + + +// DS2760 Code + +int ReadPageData(int page, unsigned char *page_data) +{ + int i; + // set the speed to 'standard' + SetSpeed(1); + // select the device + if (OWTouchReset()) // Reset the 1-Wire bus + return 0; // Return if no devices found + OWWriteByte(0xCC); // Send Skip ROM command to select single device + // read the page + OWWriteByte(0x69); // Read Page command + OWWriteByte(0); // Start reading at byte 0 + // read the page data + for (i = 0; i < 32; i++) + page_data[i] = OWReadByte(); + OWWriteByte(0xFF); + return 1; +} + +void do_ds2760(void) +{ + unsigned char data[32]; + int i; + if (ReadPageData(0,&data[0])) + { + printk("Data Received: "); + for (i = 0; i < 32; i++) + printk("%02x ",data[i]); + printk("\n"); + + } else + printk("Couldn't reset 1 wire bus\n"); + +}