From a6913fd7c8a9d60727ea7fa62b792f09432d9c11 Mon Sep 17 00:00:00 2001 From: Rob Purchase Date: Tue, 24 Mar 2009 23:06:36 +0000 Subject: D2: Slightly reduce the number of incorrect touchscreen presses by busy-waiting on the ADCRDY flag. git-svn-id: svn://svn.rockbox.org/rockbox/trunk@20527 a1c6a512-1295-4272-9138-f99709370657 --- firmware/target/arm/tcc780x/cowond2/button-cowond2.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/firmware/target/arm/tcc780x/cowond2/button-cowond2.c b/firmware/target/arm/tcc780x/cowond2/button-cowond2.c index 12eb88907a..290058b78a 100644 --- a/firmware/target/arm/tcc780x/cowond2/button-cowond2.c +++ b/firmware/target/arm/tcc780x/cowond2/button-cowond2.c @@ -139,8 +139,16 @@ int button_read_device(int *data) if (pcf50606_read(PCF5060X_ADCC1) & 0x80) /* Pen down */ { unsigned char buf[3]; + pcf50606_write(PCF5060X_ADCC2, (0xE<<1) | 1); /* ADC start X+Y */ - pcf50606_read_multiple(PCF5060X_ADCS1, buf, 3); + + do { + buf[1] = pcf50606_read(PCF5060X_ADCS2); + } while (!(buf[1] & 0x80)); /* Busy wait on ADCRDY flag */ + + buf[0] = pcf50606_read(PCF5060X_ADCS1); + buf[2] = pcf50606_read(PCF5060X_ADCS3); + pcf50606_write(PCF5060X_ADCC2, 0); /* ADC stop */ x = (buf[0] << 2) | (buf[1] & 3); @@ -172,6 +180,7 @@ int button_read_device(int *data) (*data&0x0000ffff), data); } + last_touch = current_tick; touch_available = false; } -- cgit v1.2.3