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authorDaniel Friesel <derf@finalrewind.org>2018-01-11 14:23:07 +0100
committerDaniel Friesel <derf@finalrewind.org>2018-01-11 14:23:07 +0100
commit0d84f5e512c4148bc45dd26eea177e09c0a21b56 (patch)
tree8d8ae62a68f11482d1c25f32d86cf1c43246f61d /src
parent1978e406b816d463dc7feab083ce30638e8b787a (diff)
Add Sharp96 display driver, split up msp430 SPI into a1 / b
Diffstat (limited to 'src')
-rw-r--r--src/app/sharp96test/Makefile.inc1
-rw-r--r--src/app/sharp96test/main.cc135
-rw-r--r--src/arch/msp430fr5969lp/Makefile.inc4
-rw-r--r--src/arch/msp430fr5969lp/driver/spi.cc61
-rw-r--r--src/arch/msp430fr5969lp/driver/spi_b.cc26
-rw-r--r--src/driver/sharp96.cc80
6 files changed, 237 insertions, 70 deletions
diff --git a/src/app/sharp96test/Makefile.inc b/src/app/sharp96test/Makefile.inc
new file mode 100644
index 0000000..4dbcaca
--- /dev/null
+++ b/src/app/sharp96test/Makefile.inc
@@ -0,0 +1 @@
+driver_sharp96 ?= 1
diff --git a/src/app/sharp96test/main.cc b/src/app/sharp96test/main.cc
new file mode 100644
index 0000000..bbf9258
--- /dev/null
+++ b/src/app/sharp96test/main.cc
@@ -0,0 +1,135 @@
+#include "arch.h"
+#include "driver/gpio.h"
+#include "driver/stdout.h"
+#include "driver/spi_b.h"
+#include "driver/sharp96.h"
+
+unsigned char const lynx[12 * 96] = {
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x0C, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x0C, 0x00, 0x00, 0x07, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x0C, 0x00, 0x00, 0x0F, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x1C, 0x00, 0x00, 0x0E, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x1C, 0x00, 0x00, 0x1E, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x1C, 0x00, 0x00, 0x3E, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x3C, 0x00, 0x00, 0x3E, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x3C, 0x00, 0x00, 0x3C, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x3C, 0x00, 0x00, 0x3C, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x38, 0x00, 0x00, 0x78, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x38, 0x00, 0x00, 0x70, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x38, 0x00, 0x00, 0xF8, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x38, 0x00, 0x01, 0x88, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x38, 0x00, 0x03, 0x0C, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x30, 0x00, 0x06, 0x04, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x30, 0x00, 0x0C, 0x16, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x78, 0x00, 0x18, 0x0A, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x78, 0x00, 0x10, 0x0A, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x7C, 0x00, 0x30, 0x0B, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x7C, 0x00, 0x60, 0x0D, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x7E, 0x00, 0x40, 0x2D, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x3F, 0x00, 0x80, 0x3D, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x3F, 0x81, 0x80, 0x1D, 0x80, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x3F, 0xC1, 0x00, 0x1C, 0x80, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x3F, 0xE3, 0x00, 0xFC, 0x80, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x3F, 0xF6, 0x11, 0xFC, 0x80, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x1F, 0xFE, 0x10, 0x7C, 0x80, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x1F, 0xFE, 0x10, 0x7C, 0x80, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x3F, 0xFE, 0x10, 0xFC, 0x80, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0xFF, 0x1F, 0x10, 0xFF, 0x80, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x03, 0xFF, 0x0F, 0x19, 0xFF, 0x80, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x07, 0xFF, 0x80, 0x0F, 0xFF, 0xC0, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x1F, 0x71, 0xC0, 0xFF, 0x7F, 0xE0, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x38, 0x70, 0x40, 0x7C, 0x7F, 0xF0, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x70, 0x60, 0x20, 0x00, 0x7F, 0xF0, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x01, 0xC0, 0xE0, 0x00, 0x00, 0xE1, 0xB8, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x07, 0x81, 0xC0, 0x00, 0x00, 0x70, 0x9E, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x0F, 0x81, 0xC0, 0x00, 0x00, 0x70, 0x1F, 0xC0, 0x00, 0x00,
+ 0x00, 0x00, 0x0F, 0x00, 0x00, 0x00, 0xFF, 0xC0, 0x0F, 0xE0, 0x00, 0x00,
+ 0x00, 0x00, 0x0E, 0x00, 0x00, 0x00, 0x7F, 0x80, 0x0F, 0xF8, 0x00, 0x00,
+ 0x00, 0x00, 0x0C, 0x01, 0xFE, 0x00, 0x3F, 0x80, 0x0F, 0xFE, 0x00, 0x00,
+ 0x00, 0x00, 0x0C, 0x03, 0xE0, 0x00, 0x0F, 0x80, 0x0F, 0xFF, 0x00, 0x00,
+ 0x00, 0x00, 0x0C, 0x07, 0x18, 0x00, 0x03, 0x8C, 0x07, 0xFF, 0x80, 0x00,
+ 0x00, 0x00, 0x08, 0x3E, 0x60, 0x00, 0x01, 0xCC, 0x03, 0xFF, 0xC0, 0x00,
+ 0x00, 0x00, 0x08, 0x39, 0xC0, 0x00, 0x00, 0xFC, 0x03, 0x80, 0xE0, 0x00,
+ 0x00, 0x00, 0x18, 0x7F, 0xE0, 0x01, 0xE0, 0x7E, 0x00, 0x00, 0x10, 0x00,
+ 0x00, 0x00, 0x33, 0xC4, 0x00, 0x00, 0x3C, 0x3F, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x26, 0x00, 0x00, 0x00, 0x07, 0x9F, 0xC0, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0xEC, 0x00, 0x01, 0xFE, 0x01, 0xEF, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x01, 0xD8, 0x00, 0x00, 0x00, 0x00, 0x7F, 0x80, 0x00, 0x00, 0x00,
+ 0x00, 0x03, 0x10, 0x00, 0x00, 0x00, 0x00, 0x1F, 0xC0, 0x00, 0x00, 0x00,
+ 0x00, 0x06, 0x10, 0x00, 0x00, 0x00, 0x00, 0x07, 0xE0, 0x00, 0x00, 0x00,
+ 0x00, 0x0E, 0x20, 0x1C, 0x00, 0x00, 0x0F, 0x07, 0xF0, 0x00, 0x00, 0x00,
+ 0x00, 0x0F, 0xA0, 0x70, 0x00, 0x00, 0x01, 0xC7, 0xF0, 0x00, 0x00, 0x00,
+ 0x00, 0x0F, 0xC1, 0xC6, 0x00, 0x0F, 0xFF, 0xF3, 0xE0, 0x00, 0x00, 0x00,
+ 0x00, 0x0F, 0xC3, 0x1C, 0x00, 0x00, 0x1F, 0xFD, 0xF0, 0x00, 0x00, 0x00,
+ 0x00, 0x07, 0x86, 0x3F, 0x80, 0x00, 0x03, 0xFF, 0xF8, 0x00, 0x00, 0x00,
+ 0x00, 0x07, 0x99, 0xFF, 0xE0, 0x00, 0x07, 0xFF, 0xFC, 0x00, 0x00, 0x00,
+ 0x00, 0x03, 0xFF, 0xFD, 0xF8, 0x00, 0x00, 0x7F, 0xFC, 0x00, 0x00, 0x00,
+ 0x00, 0x01, 0xFF, 0xC5, 0xFE, 0x00, 0x06, 0x3F, 0xFC, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0xE2, 0x6F, 0xFF, 0x80, 0x03, 0x8F, 0xF6, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x02, 0x5F, 0xFF, 0xC0, 0x00, 0xC7, 0xF0, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x21, 0x43, 0xFE, 0xF0, 0x00, 0x73, 0xF8, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x01, 0xC0, 0xFE, 0xF8, 0x00, 0x11, 0xF8, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x1C, 0xC0, 0x7E, 0xF8, 0x00, 0x08, 0xF8, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x0C, 0x40, 0x36, 0x7C, 0x0C, 0x04, 0x7C, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x17, 0x7E, 0x07, 0x80, 0x3C, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x0B, 0x3E, 0x01, 0xE0, 0x1E, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x0B, 0x9E, 0x00, 0xF0, 0x0E, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x05, 0xCF, 0x00, 0x7C, 0x07, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x05, 0xEF, 0x00, 0x3E, 0x03, 0x80, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x02, 0xFF, 0x00, 0x1F, 0x00, 0x80, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x02, 0x7F, 0x00, 0x0F, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x01, 0x7F, 0x00, 0x07, 0x80, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x01, 0x7F, 0x00, 0x03, 0x80, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x01, 0xFE, 0x00, 0x33, 0xC0, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x01, 0xDE, 0x01, 0x3B, 0xC0, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0xDE, 0x01, 0xBF, 0xC0, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x1E, 0x01, 0xFF, 0xC0, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x11, 0x0E, 0x03, 0xFF, 0xC0, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x6E, 0x03, 0xFF, 0x80, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x7E, 0x07, 0xFF, 0x80, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x38, 0x07, 0xFF, 0x80, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xE3, 0xFF, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x82, 0xEE, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xDE, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x9C, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x98, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+};
+
+void loop(void)
+{
+ static unsigned char i = 0;
+ gpio.led_toggle(1);
+ sharp96.writeLine(i, (unsigned char *)lynx + (12 * i));
+ sharp96.toggleVCOM();
+ if (++i == 96) {
+ i = 0;
+ sharp96.clear();
+ }
+}
+
+int main(void)
+{
+ unsigned char i = 0;
+ arch.setup();
+ gpio.setup();
+ kout.setup();
+ spi.setup();
+ sharp96.setup();
+ sharp96.powerOn();
+ sharp96.clear();
+ for (i = 0; i < 96; i++) {
+ sharp96.writeLine(i, (unsigned char *)lynx + (12 * i));
+ }
+
+ arch.idle_loop();
+
+ return 0;
+}
diff --git a/src/arch/msp430fr5969lp/Makefile.inc b/src/arch/msp430fr5969lp/Makefile.inc
index 8480b71..1581c2d 100644
--- a/src/arch/msp430fr5969lp/Makefile.inc
+++ b/src/arch/msp430fr5969lp/Makefile.inc
@@ -24,8 +24,8 @@ ifneq ($(findstring i2c,${arch_drivers}), )
TARGETS += src/arch/msp430fr5969lp/driver/i2c.cc
endif
-ifneq ($(findstring spi,${arch_drivers}), )
- TARGETS += src/arch/msp430fr5969lp/driver/spi.cc
+ifneq ($(findstring spi_a1,${arch_drivers}), )
+ TARGETS += src/arch/msp430fr5969lp/driver/spi_a1.cc
endif
ifneq ($(findstring spi_b,${arch_drivers}), )
diff --git a/src/arch/msp430fr5969lp/driver/spi.cc b/src/arch/msp430fr5969lp/driver/spi.cc
deleted file mode 100644
index 981bc53..0000000
--- a/src/arch/msp430fr5969lp/driver/spi.cc
+++ /dev/null
@@ -1,61 +0,0 @@
-#include "driver/spi.h"
-#include <msp430.h>
-
-signed char SPI::setup()
-{
- /* UCA1CLK Pin 2.4 */
- P2SEL0 &= ~BIT4;
- P2SEL1 |= BIT4;
- P2DIR |= BIT4;
-
- /* UCA1SIMO Pin 2.5 */
- P2SEL0 &= ~BIT5;
- P2SEL1 |= BIT5;
- P2DIR |= BIT5;
-
- /* UCA1SOMI Pin 2.6 */
- P2SEL0 &= ~BIT6;
- P2SEL1 |= BIT6;
- P2DIR &= ~BIT6;
- //P2REN |= BIT6;
-
- UCA1CTLW0 |= UCSWRST;
- UCA1MCTLW = 0; // no modulation
-
- UCA1CTLW0 = UCCKPH | UCMSB | UCMST | UCSYNC | UCMODE_0 | UCSSEL__SMCLK | UCSWRST;
- UCA1BRW = 15; // /16 -> 1MHz
- UCA1CTLW0 &= ~UCSWRST;
-}
-
-signed char SPI::xmit(unsigned char tx_len, unsigned char *tx_buf,
- unsigned char rx_len, unsigned char *rx_buf)
-{
- volatile char rxbuf_cache;
- if (tx_len < 1) {
- return -1;
- }
-
- UCA1IE &= ~(UCTXIE | UCRXIE);
-
- while (UCA1STATW & UCBUSY) ;
-
- rxbuf_cache = UCA1RXBUF;
- UCA1TXBUF = tx_buf[0];
-
- unsigned char tx_pos = 1;
- unsigned char rx_pos = 0;
-
- while (tx_pos < tx_len || rx_pos < rx_len) {
- if ((tx_pos < tx_len) && (UCA1IF & UCTXIFG)) {
- UCBA1TXBUF = tx_buf[tx_pos++];
- }
- if (UCA1IFG & UCRXIFG) {
- if (rx_pos < rx_len) {
- rx_buf[rx_pos] = UCA1RXBUF;
- } else {
- rxbuf_cache = UCA1RXBUF;
- }
- }
- rx_pos++;
- }
-}
diff --git a/src/arch/msp430fr5969lp/driver/spi_b.cc b/src/arch/msp430fr5969lp/driver/spi_b.cc
index eafb94e..2eb3a79 100644
--- a/src/arch/msp430fr5969lp/driver/spi_b.cc
+++ b/src/arch/msp430fr5969lp/driver/spi_b.cc
@@ -1,8 +1,10 @@
-#include "driver/spi.h"
+#include "driver/spi_b.h"
#include <msp430.h>
-signed char SPI::setup()
+void SPI::setup()
{
+ UCB0CTLW0 |= UCSWRST;
+
/* UCB0CLK Pin 2.2 */
P2SEL0 &= ~BIT2;
P2SEL1 |= BIT2;
@@ -24,19 +26,25 @@ signed char SPI::setup()
UCB0CTLW0 &= ~UCSWRST;
}
+static inline unsigned char clean_rxbuf()
+{
+ return UCB0RXBUF;
+}
+
signed char SPI::xmit(unsigned char tx_len, unsigned char *tx_buf,
unsigned char rx_len, unsigned char *rx_buf)
{
- volatile char rxbuf_cache;
if (tx_len < 1) {
return -1;
}
- UCB0IE &= ~(UCTXIE | UCRXIE);
-
while (UCB0STATW & UCBUSY) ;
- rxbuf_cache = UCB0RXBUF;
+ if (!(UCB0IFG & UCTXIFG)) {
+ return -1;
+ }
+
+ UCB0IFG &= ~UCRXIFG;
UCB0TXBUF = tx_buf[0];
unsigned char tx_pos = 1;
@@ -50,9 +58,13 @@ signed char SPI::xmit(unsigned char tx_len, unsigned char *tx_buf,
if (rx_pos < rx_len) {
rx_buf[rx_pos] = UCB0RXBUF;
} else {
- rxbuf_cache = UCB0RXBUF;
+ UCB0IFG &= ~UCRXIFG;
}
rx_pos++;
}
}
+ while (UCB0STATW & UCBUSY) ;
+ return 0;
}
+
+SPI spi;
diff --git a/src/driver/sharp96.cc b/src/driver/sharp96.cc
new file mode 100644
index 0000000..1e9a2ec
--- /dev/null
+++ b/src/driver/sharp96.cc
@@ -0,0 +1,80 @@
+#include "driver/sharp96.h"
+#include "driver/spi_b.h"
+#include "driver/gpio.h"
+
+#ifndef SHARP96_POWER_PIN
+#error makeflag sharp96_power_pin required
+#endif
+
+#ifndef SHARP96_EN_PIN
+#error makeflag sharp96_en_pin required
+#endif
+
+#ifndef SHARP96_CS_PIN
+#error makeflag sharp96_cs_pin required
+#endif
+
+#define CMD_WRITE_LINE 0x80
+#define CMD_TOGGLE_VCOM 0x40
+#define CMD_CLEAR_SCREEN 0x20
+
+void Sharp96::setup()
+{
+ gpio.output(SHARP96_POWER_PIN);
+ gpio.output(SHARP96_EN_PIN);
+ gpio.output(SHARP96_CS_PIN);
+}
+
+void Sharp96::powerOn()
+{
+ gpio.write(SHARP96_POWER_PIN, 1);
+ gpio.write(SHARP96_EN_PIN, 1);
+}
+
+void Sharp96::powerOff()
+{
+ gpio.write(SHARP96_EN_PIN, 0);
+ gpio.write(SHARP96_POWER_PIN, 0);
+}
+
+unsigned char Sharp96::swap_bits(unsigned char byte)
+{
+ byte = (byte & 0xF0) >> 4 | (byte & 0x0F) << 4;
+ byte = (byte & 0xCC) >> 2 | (byte & 0x33) << 2;
+ byte = (byte & 0xAA) >> 1 | (byte & 0x55) << 1;
+ return byte;
+}
+
+void Sharp96::clear()
+{
+ gpio.write(SHARP96_CS_PIN, 1);
+ txbuf[0] = CMD_CLEAR_SCREEN | (CMD_TOGGLE_VCOM * vcom);
+ txbuf[1] = 0;
+ spi.xmit(2, txbuf, 0, txbuf);
+ gpio.write(SHARP96_CS_PIN, 0);
+}
+
+void Sharp96::writeLine(unsigned char line_no, unsigned char* data)
+{
+ txbuf[0] = CMD_WRITE_LINE | (CMD_WRITE_LINE * vcom);
+ txbuf[1] = swap_bits(line_no + 1);
+ gpio.write(SHARP96_CS_PIN, 1);
+ spi.xmit(2, txbuf, 0, txbuf);
+ spi.xmit(12, data, 0, txbuf);
+ txbuf[0] = 0;
+ txbuf[1] = 0;
+ spi.xmit(2, txbuf, 0, txbuf);
+ gpio.write(SHARP96_CS_PIN, 0);
+}
+
+void Sharp96::toggleVCOM()
+{
+ vcom = !vcom;
+ txbuf[0] = CMD_TOGGLE_VCOM * vcom;
+ txbuf[1] = 0;
+ gpio.write(SHARP96_CS_PIN, 1);
+ spi.xmit(2, txbuf, 0, txbuf);
+ gpio.write(SHARP96_CS_PIN, 0);
+}
+
+Sharp96 sharp96;