X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=blobdiff_plain;f=cctools%2Ftarget%2Fserial%2Fserial.c;fp=cctools%2Ftarget%2Fserial%2Fserial.c;h=0000000000000000000000000000000000000000;hp=63f6c6de0c32ec477249f2cfb5db3c0995f509a6;hb=9789ca5e8caa9a013e804f307b9da380e147bd75;hpb=a5782398d968e7cb11f7203afada7c216f233b3b diff --git a/cctools/target/serial/serial.c b/cctools/target/serial/serial.c deleted file mode 100644 index 63f6c6de..00000000 --- a/cctools/target/serial/serial.c +++ /dev/null @@ -1,270 +0,0 @@ -/* - * Copyright © 2008 Keith Packard - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. - */ - -#include - -/* - * Validate UART1 - */ - -sfr at 0x80 P0; -sfr at 0x90 P1; -sfr at 0xA0 P2; -sfr at 0xC6 CLKCON; -sfr at 0xbe SLEEP; - -# define SLEEP_USB_EN (1 << 7) -# define SLEEP_XOSC_STB (1 << 6) - -sfr at 0xF1 PERCFG; -#define PERCFG_T1CFG_ALT_1 (0 << 6) -#define PERCFG_T1CFG_ALT_2 (1 << 6) - -#define PERCFG_T3CFG_ALT_1 (0 << 5) -#define PERCFG_T3CFG_ALT_2 (1 << 5) - -#define PERCFG_T4CFG_ALT_1 (0 << 4) -#define PERCFG_T4CFG_ALT_2 (1 << 4) - -#define PERCFG_U1CFG_ALT_1 (0 << 1) -#define PERCFG_U1CFG_ALT_2 (1 << 1) - -#define PERCFG_U0CFG_ALT_1 (0 << 0) -#define PERCFG_U0CFG_ALT_2 (1 << 0) - -sfr at 0xF2 ADCCFG; -sfr at 0xF3 P0SEL; -sfr at 0xF4 P1SEL; -sfr at 0xF5 P2SEL; - -sfr at 0xFD P0DIR; -sfr at 0xFE P1DIR; -sfr at 0xFF P2DIR; -sfr at 0x8F P0INP; -sfr at 0xF6 P1INP; -sfr at 0xF7 P2INP; - -sfr at 0x89 P0IFG; -sfr at 0x8A P1IFG; -sfr at 0x8B P2IFG; - -sbit at 0x90 P1_0; -sbit at 0x91 P1_1; -sbit at 0x92 P1_2; -sbit at 0x93 P1_3; -sbit at 0x94 P1_4; -sbit at 0x95 P1_5; -sbit at 0x96 P1_6; -sbit at 0x97 P1_7; - -/* - * UART registers - */ - -sfr at 0x86 U0CSR; -sfr at 0xF8 U1CSR; - -/* - * IRCON2 - */ -sfr at 0xE8 IRCON2; /* CPU Interrupt Flag 5 */ - -sbit at 0xE8 USBIF; /* USB interrupt flag (shared with Port2) */ -sbit at 0xE8 P2IF; /* Port2 interrupt flag (shared with USB) */ -sbit at 0xE9 UTX0IF; /* USART0 TX interrupt flag */ -sbit at 0xEA UTX1IF; /* USART1 TX interrupt flag (shared with I2S TX) */ -sbit at 0xEA I2STXIF; /* I2S TX interrupt flag (shared with USART1 TX) */ -sbit at 0xEB P1IF; /* Port1 interrupt flag */ -sbit at 0xEC WDTIF; /* Watchdog timer interrupt flag */ - -# define UxCSR_MODE_UART (1 << 7) -# define UxCSR_MODE_SPI (0 << 7) -# define UxCSR_RE (1 << 6) -# define UxCSR_SLAVE (1 << 5) -# define UxCSR_MASTER (0 << 5) -# define UxCSR_FE (1 << 4) -# define UxCSR_ERR (1 << 3) -# define UxCSR_RX_BYTE (1 << 2) -# define UxCSR_TX_BYTE (1 << 1) -# define UxCSR_ACTIVE (1 << 0) - -sfr at 0xc4 U0UCR; -sfr at 0xfb U1UCR; - -# define UxUCR_FLUSH (1 << 7) -# define UxUCR_FLOW_DISABLE (0 << 6) -# define UxUCR_FLOW_ENABLE (1 << 6) -# define UxUCR_D9_EVEN_PARITY (0 << 5) -# define UxUCR_D9_ODD_PARITY (1 << 5) -# define UxUCR_BIT9_8_BITS (0 << 4) -# define UxUCR_BIT9_9_BITS (1 << 4) -# define UxUCR_PARITY_DISABLE (0 << 3) -# define UxUCR_PARITY_ENABLE (1 << 3) -# define UxUCR_SPB_1_STOP_BIT (0 << 2) -# define UxUCR_SPB_2_STOP_BITS (1 << 2) -# define UxUCR_STOP_LOW (0 << 1) -# define UxUCR_STOP_HIGH (1 << 1) -# define UxUCR_START_LOW (0 << 0) -# define UxUCR_START_HIGH (1 << 0) - -sfr at 0xc5 U0GCR; -sfr at 0xfc U1GCR; - -# define UxGCR_CPOL_NEGATIVE (0 << 7) -# define UxGCR_CPOL_POSITIVE (1 << 7) -# define UxGCR_CPHA_FIRST_EDGE (0 << 6) -# define UxGCR_CPHA_SECOND_EDGE (1 << 6) -# define UxGCR_ORDER_LSB (0 << 5) -# define UxGCR_ORDER_MSB (1 << 5) -# define UxGCR_BAUD_E_MASK (0x1f) -# define UxGCR_BAUD_E_SHIFT 0 - -sfr at 0xc1 U0DBUF; -sfr at 0xf9 U1DBUF; -sfr at 0xc2 U0BAUD; -sfr at 0xfa U1BAUD; - -#define MOSI P1_5 -#define MISO P1_4 -#define SCK P1_3 -#define CS P1_2 - -#define DEBUG P1_1 - -#define USART 1 - -#define nop() _asm nop _endasm; - -void -delay (unsigned char n) -{ - unsigned char i = 0; - unsigned char j = 0; - - n++; - while (--n != 0) - while (--i != 0) - while (--j != 0) - nop(); -} - -/* - * This version uses the USART in SPI mode - */ -void -usart_init(void) -{ - P1DIR |= (1 << 2); - /* - * Configure the peripheral pin choices - * for both of the serial ports - * - * Note that telemetrum will use U1CFG_ALT_2 - * but that overlaps with SPI ALT_2, so until - * we can test that this works, we'll set this - * to ALT_1 - */ - PERCFG = (PERCFG_U1CFG_ALT_2 | - PERCFG_U0CFG_ALT_1); - - /* - * Make the UART pins controlled by the UART - * hardware - */ - P1SEL |= ((1 << 6) | (1 << 7)); - - /* - * UART mode with the receiver enabled - */ - U1CSR = (UxCSR_MODE_UART | - UxCSR_RE); - /* - * Pick a 38.4kbaud rate - */ - U1BAUD = 163; - U1GCR = 10 << UxGCR_BAUD_E_SHIFT; /* 38400 */ -// U1GCR = 3 << UxGCR_BAUD_E_SHIFT; /* 300 */ - /* - * Reasonable serial parameters - */ - U1UCR = (UxUCR_FLUSH | - UxUCR_FLOW_DISABLE | - UxUCR_D9_ODD_PARITY | - UxUCR_BIT9_8_BITS | - UxUCR_PARITY_DISABLE | - UxUCR_SPB_2_STOP_BITS | - UxUCR_STOP_HIGH | - UxUCR_START_LOW); -} - -void -usart_out_byte(uint8_t byte) -{ - U1DBUF = byte; - while (!UTX1IF) - ; - UTX1IF = 0; -} - -void -usart_out_string(uint8_t *string) -{ - uint8_t b; - - while (b = *string++) - usart_out_byte(b); -} - -uint8_t -usart_in_byte(void) -{ - uint8_t b; - while ((U1CSR & UxCSR_RX_BYTE) == 0) - ; - b = U1DBUF; - U1CSR &= ~UxCSR_RX_BYTE; - return b; -} - -void -debug_byte(uint8_t byte) -{ - uint8_t s; - - for (s = 0; s < 8; s++) { - DEBUG = byte & 1; - delay(5); - byte >>= 1; - } -} - -main () -{ - P1DIR |= 2; - CLKCON = 0; - while (!(SLEEP & SLEEP_XOSC_STB)) - ; - - usart_init(); - - for (;;) { - usart_out_string("hello world\r\n"); - debug_byte(usart_in_byte()); - } - -}