diff options
Diffstat (limited to 'nuttx/configs/olimex-strp711/src/up_enc28j60.c')
| -rwxr-xr-x | nuttx/configs/olimex-strp711/src/up_enc28j60.c | 52 |
1 files changed, 39 insertions, 13 deletions
diff --git a/nuttx/configs/olimex-strp711/src/up_enc28j60.c b/nuttx/configs/olimex-strp711/src/up_enc28j60.c index 63a21067f..fcb68b5bb 100755 --- a/nuttx/configs/olimex-strp711/src/up_enc28j60.c +++ b/nuttx/configs/olimex-strp711/src/up_enc28j60.c @@ -36,8 +36,10 @@ /* * ENC28J60 Module * - * The ENC28J60 module does not come on the Olimex-STR-P711, but this describes - * how I have connected it: + * The ENC28J60 module does not come on the Olimex-STR-P711, but this + * describes how I have connected it. NOTE that the ENC28J60 requires an + * external interrupt (XTI) pin. The only easily accessible XTI pins are on + * SPI0/1 so you can't have both SPI0 and 1 together with this configuration. * * Module CON5 QFN ENC2860 Description * --------------- ------------------------------------------------------- @@ -53,7 +55,7 @@ * 6 5 NET RST 6 ~RESET Active-low device Reset input * * For the Olimex STR-P711, the ENC28J60 module is placed on SPI0 and uses - * P0.3 for CS, P1.4 for an interrupt, and P1.5 as a reset: + * P0.3 for CS, P0.6 for an interrupt, and P0.4 as a reset: * * Module CON5 Olimex STR-P711 Connection * --------------- ------------------------------------------------------- @@ -64,14 +66,14 @@ * 5 5 GND SPI0-1 GND * 10 J9-1 3V3 SPI0-6 3.3V * 9 2 WOL NC - * 8 3 NET INT TMR1_EXT-5 P1.4 input P1.4/T1.ICAPA/T1.EXTCLK + * 8 3 NET INT SPI1-5 P0.6 XTI 11 P0.6/S1.SCLK * 7 4 CLKOUT NC - * 6 5 NET RST TMR1_EXT_4 P1.5 output P1.5/T1.ICAPB + * 6 5 NET RST SPI1-4 P0.4 output P0.4/S1.MISO * * UART3, I2C cannot be used with SPI0. The GPIOs selected for the ENC28J60 * interrupt conflict with TMR1. */ -#warning "Need to select differnt interrupt pin.. XTI doesn't support this one" + /**************************************************************************** * Included Files @@ -112,24 +114,41 @@ #endif /* UART3, I2C cannot be used with SPI0. The GPIOs selected for the ENC28J60 - * interrupt conflict with TIM1. + * interrupt conflict with BSPI1. */ #ifdef CONFIG_STR71X_UART3 # error "CONFIG_STR71X_UART3 cannot be used in this configuration" #endif -#ifdef CONFIG_STR71X_TIM1 -# error "CONFIG_STR71X_TIM1 cannot be used in this configuration" +#ifdef CONFIG_STR71X_I2C1 +# error "CONFIG_STR71X_I2C1 cannot be used in this configuration" +#endif + +#ifdef CONFIG_STR71X_BSP1 +# error "CONFIG_STR71X_BSP1 cannot be used in this configuration" #endif /* SPI Assumptions **********************************************************/ -#define ENC28J60_SPI_PORTNO 0 /* On SPI0 */ -#define ENC28J60_DEVNO 0 /* Only one ENC28J60 */ -#define ENC28J60_IRQ STR71X_IRQ_FIRSTXTI /* NEEDED!!!!!!!!!!!!!!!! */ +#define ENC28J60_SPI_PORTNO 0 /* On SPI0 */ +#define ENC28J60_DEVNO 0 /* Only one ENC28J60 */ +#define ENC28J60_IRQ STR71X_IRQ_PORT0p6 /* XTI Line 11: P0.6 */ + +/* ENC28J60 additional pins ************************************************* + * + * NOTE: The ENC28J60 is a 3.3V part; however, it was designed to be + * easily integrated into 5V systems. The SPI CS, SCK and SI inputs, + * as well as the RESET pin, are all 5V tolerant. On the other hand, + * if the host controller is operated at 5V, it quite likely will + * not be within specifications when its SPI and interrupt inputs + * are driven by the 3.3V CMOS outputs on the ENC28J60. A + * unidirectional level translator would be necessary. + */ -#warning "Eventually need to fix XTI IRQ number!" +# define ENC_GPIO0_CS (1 << 3) /* Chip select (P0.3) */ +# define ENC_GPIO0_NETRST (1 << 4) /* Reset (P0.4) */ +# define ENC_GPIO0_NETINT (1 << 6) /* Interrupt (P0.6) */ /**************************************************************************** * Private Data @@ -150,6 +169,7 @@ void up_netinitialize(void) { FAR struct spi_dev_s *spi; + uint16_t reg16; int ret; /* Get the SPI port */ @@ -170,6 +190,12 @@ void up_netinitialize(void) return; } + /* Take ENC28J60 out of reset (active low)*/ + + reg16 = getreg16(STR71X_GPIO0_PD); + reg16 &= ~ENC_GPIO0_NETRST; + putreg16(reg16, STR71X_GPIO0_PD); + /* Bind the SPI port to the ENC28J60 driver */ ret = enc_initialize(spi, ENC28J60_DEVNO, ENC28J60_IRQ); |