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git://projects.qi-hardware.com/ben-wpan.git
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Implemented AT86RF230 reset and access modes. (Completely untested.)
- fw/atspi/at86rf230.h: AT86RF230 SPI protocol commands and buffer sizes
- fw/atspi/atspi.c (init_io): set all IOs to their initial state
- fw/include/atspi/ep0.h, fw/atspi/ep0.c (my_setup): command ATSPI_RF_RESET
to reset the AT86RF230
- fw/include/atspi/ep0.h, fw/atspi/ep0.c (my_setup): commands
ATSPI_{REG,BUF,SRAM}_{READ,WRITE} for the six SPI access modes
This commit is contained in:
Werner Almesberger
parent
3c87d9f8c7
commit
5447951c6e
29
fw/atspi/at86rf230.h
Normal file
29
fw/atspi/at86rf230.h
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@ -0,0 +1,29 @@
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/*
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* atspi/at86rf230.h - AT86RF230 protocol and register definitions
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*
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* Written 2008-2010 by Werner Almesberger
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* Copyright 2008-2010 Werner Almesberger
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#ifndef AT86RF230_H
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#define AT86RF230_H
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enum at86rf230_spi_cmd {
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AT86RF230_REG_WRITE = 0xc0, /* 11... */
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AT86RF230_REG_READ = 0x80, /* 10... */
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AT86RF230_BUF_WRITE = 0x60, /* 011... */
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AT86RF230_BUF_READ = 0x20, /* 001... */
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AT86RF230_SRAM_WRITE = 0x40, /* 010... */
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AT86RF230_SRAM_READ = 0x00 /* 000... */
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};
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#define MAX_PSDU 127 /* octets, see AT86RF230 manual section 8.1 */
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#define SRAM_SIZE 128
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#endif /* !AT86RF230_H */
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@ -18,8 +18,48 @@
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#include "version.h"
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static void init_io(void)
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{
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/*
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* Signal Mode Value
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*
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* MOSI push-pull 0
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* MISO open drain 1 (input)
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* SCLK push-pull 1
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* nSS push-pull 1
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* nRST_RF push-pull 1
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* IRQ_RF open drain 1 (input)
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* SLP_TR push-pull 0
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*
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* LED push-pull 0 (set up by boot loader)
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*
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* all unused open drain 0
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*/
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MOSI = 0;
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MOSI_MODE = 1;
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SCLK = 0;
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SCLK_MODE = 1;
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nSS_MODE = 1;
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nRST_RF_MODE = 1;
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SLP_TR = 0;
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SLP_TR_MODE = 1;
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P0 &=
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~((1 << 0) | (1 << 3) | (1 << 4) | (1 << 5) | (1 << 6) | (1 << 7));
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P3 = 0;
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}
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void main(void)
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{
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init_io();
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usb_init();
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ep0_init();
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120
fw/atspi/ep0.c
120
fw/atspi/ep0.c
@ -21,6 +21,7 @@
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//#include "uart.h"
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#include "usb.h"
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#include "atspi/ep0.h"
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#include "at86rf230.h"
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#include "version.h"
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@ -29,11 +30,52 @@
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static const uint8_t id[] = { EP0ATSPI_MAJOR, EP0ATSPI_MINOR, HW_TYPE };
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static __xdata uint8_t buf[MAX_PSDU+3]; /* command, PHDR, and LQ */
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static uint8_t size;
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static void spi_send(uint8_t v)
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{
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uint8_t mask;
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for (mask = 0x80; mask; mask >>= 1) {
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MOSI = !!(v & mask);
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SCLK = 1;
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SCLK = 0;
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}
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}
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static uint8_t spi_recv(void)
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{
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uint8_t res = 0;
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uint8_t i;
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for (i = 0; i != 8; i++) {
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res = (res << 1) | MISO;
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SCLK = 1;
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SCLK = 0;
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}
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return res;
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}
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static void do_buf_write(void *user)
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{
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uint8_t i;
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user; /* suppress warning */
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nSS = 0;
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spi_send(AT86RF230_BUF_WRITE);
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for (i = 0; i != size; i++)
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spi_send(buf[i]);
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nSS = 1;
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}
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static __bit my_setup(struct setup_request *setup) __reentrant
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{
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uint8_t size;
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uint8_t i;
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switch (setup->bmRequestType | setup->bRequest << 8) {
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case ATSPI_FROM_DEV(ATSPI_ID):
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@ -63,6 +105,82 @@ static __bit my_setup(struct setup_request *setup) __reentrant
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RSTSRC = SWRSF;
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while (1);
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case ATSPI_TO_DEV(ATSPI_RF_RESET):
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debug("ATSPI_RF_RESET\n");
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nRST_RF = 0;
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/* 11.4.12 min 625 ns */
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nRST_RF = 1;
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return 1;
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case ATSPI_TO_DEV(ATSPI_REG_WRITE):
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debug("ATSPI_REG_WRITE\n");
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nSS = 0;
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spi_send(AT86RF230_REG_WRITE | setup->wIndex);
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spi_send(setup->wValue);
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nSS = 1;
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return 1;
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case ATSPI_FROM_DEV(ATSPI_REG_READ):
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debug("ATSPI_REG_READ\n");
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nSS = 0;
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spi_send(AT86RF230_REG_READ | setup->wIndex);
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*buf = spi_recv();
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nSS = 1;
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usb_send(&ep0, buf, 1, NULL, NULL);
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return 1;
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case ATSPI_TO_DEV(ATSPI_BUF_WRITE):
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debug("ATSPI_BUF_WRITE\n");
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if (setup->wLength < 1)
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return 0;
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if (setup->wLength > MAX_PSDU+1) /* PHR+PSDU */
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return 0;
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buf[0] = AT86RF230_BUF_WRITE;
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size = setup->wLength+1;
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usb_recv(&ep0, buf+1, setup->wLength, do_buf_write, NULL);
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return 1;
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case ATSPI_TO_DEV(ATSPI_BUF_READ):
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debug("ATSPI_BUF_READ\n");
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if (setup->wLength < 2) /* PHR+LQ */
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return 0;
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if (setup->wLength > MAX_PSDU+2) /* PHR+PSDU+LQ */
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return 0;
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nSS = 0;
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spi_send(AT86RF230_BUF_READ);
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size = *buf = spi_recv();
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if (size+2 > setup->wLength)
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size = setup->wLength-2;
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for (i = 0; i != size+1; i++)
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buf[i+1] = spi_recv();
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nSS = 1;
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usb_send(&ep0, buf, size+1, NULL, NULL);
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return 1;
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case ATSPI_TO_DEV(ATSPI_SRAM_WRITE):
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debug("ATSPI_SRAM_WRITE\n");
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if (setup->wIndex > SRAM_SIZE)
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return 0;
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if (setup->wIndex+setup->wLength > SRAM_SIZE)
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return 0;
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buf[0] = AT86RF230_SRAM_WRITE;
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buf[1] = setup->wIndex;
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size = setup->wLength+2;
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usb_recv(&ep0, buf+2, setup->wLength, do_buf_write, NULL);
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return 1;
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case ATSPI_TO_DEV(ATSPI_SRAM_READ):
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debug("ATSPI_SRAM_READ\n");
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if (setup->wIndex > SRAM_SIZE)
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return 0;
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if (setup->wIndex+setup->wLength > SRAM_SIZE)
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return 0;
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nSS = 0;
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spi_send(AT86RF230_SRAM_READ);
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spi_send(setup->wIndex);
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for (i = 0; i != size; i++)
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buf[i] = spi_recv();
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nSS = 1;
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usb_send(&ep0, buf, size, NULL, NULL);
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return 1;
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default:
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error("Unrecognized SETUP: 0x%02x 0x%02x ...\n",
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setup->bmRequestType, setup->bRequest);
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@ -17,10 +17,19 @@
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/*
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* Direction bRequest wValue wIndex wLength
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*
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* ->host ATSPI_ID 0 0 3
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* host-> ATSPI_RESET 0 0 0
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* ->host ATSPI_ID - - 3
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* host-> ATSPI_RESET - - 0
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* ->host ATSPI_BUILD_NUMBER - - 2
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* ->host ATSPI_BUILD_DATE - - #bytes
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*
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* host-> ATSPI_RF_RESET - -
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*
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* host-> ATSPI_REG_WRITE value addr 0
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* ->host ATSPI_REG_READ - addr 1
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* host-> ATSPI_BUF_WRITE - - #bytes
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* ->host ATSPI_BUF_READ - - #bytes
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* host-> ATSPI_SRAM_WRITE - addr #bytes
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* ->host ATSPI_SRAM_READ - addr #bytes
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*/
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/*
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@ -55,6 +64,13 @@ enum atspi_requests {
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ATSPI_RESET,
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ATSPI_BUILD_NUMBER,
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ATSPI_BUILD_DATE,
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ATSPI_RF_RESET = 0x10,
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ATSPI_REG_WRITE = 0x20,
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ATSPI_REG_READ,
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ATSPI_BUF_WRITE,
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ATSPI_BUF_READ,
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ATSPI_SRAM_WRITE,
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ATSPI_SRAM_READ,
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};
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