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Toggle CS after every byte per the timing diagram.

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This commit is contained in:
Christopher Anderson
2016-05-05 18:16:18 -07:00
parent 217f4938a5
commit af0ecf15d5
1 changed files with 9 additions and 26 deletions
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35
target/dartuinoP0/display/eink.c
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@@ -638,7 +638,9 @@ void write_data(uint8_t *buf, size_t len) {
gpio_set(GPIO_DISP_CS, 1);
#else
//spin_lock_irqsave(&lock, state);
spi_write(&SpiHandle, buf, len, GPIO_DISP_CS);
for (size_t i = 0; i < len; i++) {
spi_write(&SpiHandle, buf + i, 1, GPIO_DISP_CS);
}
//spin_unlock_irqrestore(&lock, state);
#endif
//exit_critical_section;
@@ -681,25 +683,6 @@ status_t get_status(et011tt2_status_t *status) {
return err;
}
// SpiBus must be configured in half-duplex mode. Display supports up to 6600
// Kb/s baud rate. All GPIO should be configured active high. The orientation
// parameter represents the virtual display orientation relative to the
// physical display.
//
// The parameter disconnect_reset indicates if reset should float when
// inactive.
//
// GPIO:
// chip_select - CSB - SPI chip select pin (active low).
// data_command - DC - Command/parameter select for 4-wire serial mode:
// L: command
// H: parameter
// reset - RST_N - Global reset pin (active low).
// busy - BUSY_N - Indicates timing controller status (active low):
// L: Driver is busy, data/VCOM is transforming.
// H: Not busy. Host side can send command/data to driver.
status_t eink_init(void) {
TRACE_ENTRY;
status_t err = NO_ERROR;
@@ -803,21 +786,21 @@ status_t eink_init(void) {
};
/*dr.x = 0;
dr.x = 0;
dr.y_low = 0;
dr.w = 240-1;
dr.l_high = 0;
dr.l_low = 240-1;*/
dr.l_low = 240-1;
data_transmission_window_t dtw = {
.x = 0x0, .byte1 = 0x0, .y_low = 0x0, .w = 0x7F, .byte4 = 0x03, .l_low = 0xFF,
};
/*dtw.x = 0;
dtw.x = 0;
dtw.y_low = 0;
dtw.w = 240-1;
dtw.l_high = 0;
dtw.l_low = 240-1;*/
dtw.l_low = 240-1;
set_data_command_mode();
@@ -884,7 +867,7 @@ status_t eink_init(void) {
printf("Couldn't allocate framebuffer\n");
return ERR_GENERIC;
}
memset(buf, 0b00011011, fbsize);
memset(buf, 0b00001111, fbsize);
// DTMW
write_cmd(DataStartTransmissionWindow);
@@ -892,7 +875,7 @@ status_t eink_init(void) {
// DTM2
write_cmd(DataStartTransmission2);
write_burst_data(buf, fbsize);
write_data(buf, fbsize);
// DRF
write_cmd(DisplayRefresh);