diff options
Diffstat (limited to 'boards/base/Olimex-SAM7EX256-GE8/board_Nokia6610GE8.h')
-rw-r--r-- | boards/base/Olimex-SAM7EX256-GE8/board_Nokia6610GE8.h | 19 |
1 files changed, 8 insertions, 11 deletions
diff --git a/boards/base/Olimex-SAM7EX256-GE8/board_Nokia6610GE8.h b/boards/base/Olimex-SAM7EX256-GE8/board_Nokia6610GE8.h index aa907058..e74fe5b2 100644 --- a/boards/base/Olimex-SAM7EX256-GE8/board_Nokia6610GE8.h +++ b/boards/base/Olimex-SAM7EX256-GE8/board_Nokia6610GE8.h @@ -37,7 +37,6 @@ static volatile AT91PS_PIO pPIOA = AT91C_BASE_PIOA; static volatile AT91PS_PIO pPIOB = AT91C_BASE_PIOB; static volatile AT91PS_SPI pSPI = AT91C_BASE_SPI0; static volatile AT91PS_PMC pPMC = AT91C_BASE_PMC; -static volatile AT91PS_PDC pPDC = AT91C_BASE_PDC_SPI0; /* The PWM backlight control is non-linear on this board. * We pick values here that make it look a bit more linear. @@ -100,9 +99,7 @@ static inline void init_board(GDisplay *g) { pPIOA->PIO_SODR = PIOA_LCD_RESET_MASK; // Set PA2 to HIGH pPIOA->PIO_OER = PIOA_LCD_RESET_MASK; // Configure PA2 as output - // CS pin - this seems to be ignored - // pPIOA->PIO_SODR = 1<<12; // Set PA2 to HIGH - // pPIOA->PIO_OER = 1<<12; // Configure PA2 as output + // CS pin - this is driven automatically by the SPI hardware itself // Init SPI0 // Disable the following pins from PIO control (will be used instead by the SPI0 peripheral) @@ -112,16 +109,16 @@ static inline void init_board(GDisplay *g) { // BIT18 = PA18 -> SPI0_SPCK Serial Clock (to LCD slave) pPIOA->PIO_PDR = (1<<12) | (1<<16) | (1<<17) | (1<<18); pPIOA->PIO_ASR = (1<<12) | (1<<16) | (1<<17) | (1<<18); - pPIOA->PIO_BSR = 0; //enable the clock of SPI pPMC->PMC_PCER = 1 << AT91C_ID_SPI0; // Fixed mode pSPI->SPI_CR = 0x81; //SPI Enable, Software reset + pSPI->SPI_CR = 0x81; //SPI Enable, Software reset - 2nd write as per errata pSPI->SPI_CR = 0x01; //SPI Enable - pSPI->SPI_MR = 0xE0011; //Master mode, fixed select, disable decoder, PCS=1110 - pSPI->SPI_CSR[0] = 0x01010311; //9bit, CPOL=1, ClockPhase=0, SCLK = 48Mhz/3 = 16MHz + pSPI->SPI_MR = 0x000E0011; //Master mode, fixed select, disable decoder, PCS=1110 + pSPI->SPI_CSR[0] = 0x00000311; //9bit, CPOL=1, ClockPhase=0, SCLK = 48Mhz/3 = 16MHz /* Display backlight control at 100% */ pwmRunning = FALSE; @@ -178,16 +175,16 @@ static inline void release_bus(GDisplay *g) { static inline void write_index(GDisplay *g, uint16_t index) { (void) g; - // wait for the previous transfer to complete - while((pSPI->SPI_SR & AT91C_SPI_TXEMPTY) == 0); + // wait for the previous transfer to start + while(!(pSPI->SPI_SR & AT91C_SPI_TDRE)); // send the command pSPI->SPI_TDR = index & 0xFF; } static inline void write_data(GDisplay *g, uint16_t data) { (void) g; - // wait for the previous transfer to complete - while((pSPI->SPI_SR & AT91C_SPI_TXEMPTY) == 0); + // wait for the previous transfer to start + while(!(pSPI->SPI_SR & AT91C_SPI_TDRE)); // send the data pSPI->SPI_TDR = data | 0x0100; } |