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mirror of git://projects.qi-hardware.com/ben-wpan.git synced 2024-12-23 09:12:04 +02:00

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 2010-08-20 01:50:51 -03:00
parent 3c87d9f8c7
commit 5447951c6e
4 changed files with 206 additions and 3 deletions

29
fw/atspi/at86rf230.h Normal file
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@ -0,0 +1,29 @@
/*
* atspi/at86rf230.h - AT86RF230 protocol and register definitions
*
* Written 2008-2010 by Werner Almesberger
* Copyright 2008-2010 Werner Almesberger
*
* 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.
*/
#ifndef AT86RF230_H
#define AT86RF230_H
enum at86rf230_spi_cmd {
AT86RF230_REG_WRITE = 0xc0, /* 11... */
AT86RF230_REG_READ = 0x80, /* 10... */
AT86RF230_BUF_WRITE = 0x60, /* 011... */
AT86RF230_BUF_READ = 0x20, /* 001... */
AT86RF230_SRAM_WRITE = 0x40, /* 010... */
AT86RF230_SRAM_READ = 0x00 /* 000... */
};
#define MAX_PSDU 127 /* octets, see AT86RF230 manual section 8.1 */
#define SRAM_SIZE 128
#endif /* !AT86RF230_H */

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@ -18,8 +18,48 @@
#include "version.h"
static void init_io(void)
{
/*
* Signal Mode Value
*
* MOSI push-pull 0
* MISO open drain 1 (input)
* SCLK push-pull 1
* nSS push-pull 1
* nRST_RF push-pull 1
* IRQ_RF open drain 1 (input)
* SLP_TR push-pull 0
*
* LED push-pull 0 (set up by boot loader)
*
* all unused open drain 0
*/
MOSI = 0;
MOSI_MODE = 1;
SCLK = 0;
SCLK_MODE = 1;
nSS_MODE = 1;
nRST_RF_MODE = 1;
SLP_TR = 0;
SLP_TR_MODE = 1;
P0 &=
~((1 << 0) | (1 << 3) | (1 << 4) | (1 << 5) | (1 << 6) | (1 << 7));
P3 = 0;
}
void main(void)
{
init_io();
usb_init();
ep0_init();

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@ -21,6 +21,7 @@
//#include "uart.h"
#include "usb.h"
#include "atspi/ep0.h"
#include "at86rf230.h"
#include "version.h"
@ -29,11 +30,52 @@
static const uint8_t id[] = { EP0ATSPI_MAJOR, EP0ATSPI_MINOR, HW_TYPE };
static __xdata uint8_t buf[MAX_PSDU+3]; /* command, PHDR, and LQ */
static uint8_t size;
static void spi_send(uint8_t v)
{
uint8_t mask;
for (mask = 0x80; mask; mask >>= 1) {
MOSI = !!(v & mask);
SCLK = 1;
SCLK = 0;
}
}
static uint8_t spi_recv(void)
{
uint8_t res = 0;
uint8_t i;
for (i = 0; i != 8; i++) {
res = (res << 1) | MISO;
SCLK = 1;
SCLK = 0;
}
return res;
}
static void do_buf_write(void *user)
{
uint8_t i;
user; /* suppress warning */
nSS = 0;
spi_send(AT86RF230_BUF_WRITE);
for (i = 0; i != size; i++)
spi_send(buf[i]);
nSS = 1;
}
static __bit my_setup(struct setup_request *setup) __reentrant
{
uint8_t size;
uint8_t i;
switch (setup->bmRequestType | setup->bRequest << 8) {
case ATSPI_FROM_DEV(ATSPI_ID):
@ -63,6 +105,82 @@ static __bit my_setup(struct setup_request *setup) __reentrant
RSTSRC = SWRSF;
while (1);
case ATSPI_TO_DEV(ATSPI_RF_RESET):
debug("ATSPI_RF_RESET\n");
nRST_RF = 0;
/* 11.4.12 min 625 ns */
nRST_RF = 1;
return 1;
case ATSPI_TO_DEV(ATSPI_REG_WRITE):
debug("ATSPI_REG_WRITE\n");
nSS = 0;
spi_send(AT86RF230_REG_WRITE | setup->wIndex);
spi_send(setup->wValue);
nSS = 1;
return 1;
case ATSPI_FROM_DEV(ATSPI_REG_READ):
debug("ATSPI_REG_READ\n");
nSS = 0;
spi_send(AT86RF230_REG_READ | setup->wIndex);
*buf = spi_recv();
nSS = 1;
usb_send(&ep0, buf, 1, NULL, NULL);
return 1;
case ATSPI_TO_DEV(ATSPI_BUF_WRITE):
debug("ATSPI_BUF_WRITE\n");
if (setup->wLength < 1)
return 0;
if (setup->wLength > MAX_PSDU+1) /* PHR+PSDU */
return 0;
buf[0] = AT86RF230_BUF_WRITE;
size = setup->wLength+1;
usb_recv(&ep0, buf+1, setup->wLength, do_buf_write, NULL);
return 1;
case ATSPI_TO_DEV(ATSPI_BUF_READ):
debug("ATSPI_BUF_READ\n");
if (setup->wLength < 2) /* PHR+LQ */
return 0;
if (setup->wLength > MAX_PSDU+2) /* PHR+PSDU+LQ */
return 0;
nSS = 0;
spi_send(AT86RF230_BUF_READ);
size = *buf = spi_recv();
if (size+2 > setup->wLength)
size = setup->wLength-2;
for (i = 0; i != size+1; i++)
buf[i+1] = spi_recv();
nSS = 1;
usb_send(&ep0, buf, size+1, NULL, NULL);
return 1;
case ATSPI_TO_DEV(ATSPI_SRAM_WRITE):
debug("ATSPI_SRAM_WRITE\n");
if (setup->wIndex > SRAM_SIZE)
return 0;
if (setup->wIndex+setup->wLength > SRAM_SIZE)
return 0;
buf[0] = AT86RF230_SRAM_WRITE;
buf[1] = setup->wIndex;
size = setup->wLength+2;
usb_recv(&ep0, buf+2, setup->wLength, do_buf_write, NULL);
return 1;
case ATSPI_TO_DEV(ATSPI_SRAM_READ):
debug("ATSPI_SRAM_READ\n");
if (setup->wIndex > SRAM_SIZE)
return 0;
if (setup->wIndex+setup->wLength > SRAM_SIZE)
return 0;
nSS = 0;
spi_send(AT86RF230_SRAM_READ);
spi_send(setup->wIndex);
for (i = 0; i != size; i++)
buf[i] = spi_recv();
nSS = 1;
usb_send(&ep0, buf, size, NULL, NULL);
return 1;
default:
error("Unrecognized SETUP: 0x%02x 0x%02x ...\n",
setup->bmRequestType, setup->bRequest);

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@ -17,10 +17,19 @@
/*
* Direction bRequest wValue wIndex wLength
*
* ->host ATSPI_ID 0 0 3
* host-> ATSPI_RESET 0 0 0
* ->host ATSPI_ID - - 3
* host-> ATSPI_RESET - - 0
* ->host ATSPI_BUILD_NUMBER - - 2
* ->host ATSPI_BUILD_DATE - - #bytes
*
* host-> ATSPI_RF_RESET - -
*
* host-> ATSPI_REG_WRITE value addr 0
* ->host ATSPI_REG_READ - addr 1
* host-> ATSPI_BUF_WRITE - - #bytes
* ->host ATSPI_BUF_READ - - #bytes
* host-> ATSPI_SRAM_WRITE - addr #bytes
* ->host ATSPI_SRAM_READ - addr #bytes
*/
/*
@ -55,6 +64,13 @@ enum atspi_requests {
ATSPI_RESET,
ATSPI_BUILD_NUMBER,
ATSPI_BUILD_DATE,
ATSPI_RF_RESET = 0x10,
ATSPI_REG_WRITE = 0x20,
ATSPI_REG_READ,
ATSPI_BUF_WRITE,
ATSPI_BUF_READ,
ATSPI_SRAM_WRITE,
ATSPI_SRAM_READ,
};