qi-hardware/antorcha
1
0
Fork 0
mirror of git://projects.qi-hardware.com/antorcha.git synced 2025-04-21 12:27:27 +03:00
Code Activity

RESET protocol to jump from application to boot loader without power cycling

Browse Source
This commit is contained in:
Werner Almesberger
2012-06-18 20:31:20 -03:00
parent 683056bca7
commit cc4b5607c7
8 changed files with 42 additions and 15 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
tools/antorcha.c
View File

@@ -49,6 +49,7 @@ static void rf_send(struct atrf_dsc *dsc, void *buf, int len)
/* Copy the message to append the CRC placeholders */
memcpy(tmp, buf, len);
atrf_reg_write(dsc, REG_TRX_STATE, TRX_CMD_PLL_ON);
flush_interrupts(dsc);
atrf_buf_write(dsc, tmp, len+2);
atrf_reg_write(dsc, REG_TRX_STATE, TRX_CMD_TX_START);
wait_for_interrupt(dsc, IRQ_TRX_END,
@@ -98,17 +99,25 @@ static void ping(struct atrf_dsc *dsc)
}
static void packet(struct atrf_dsc *dsc,
static void packet_noack(struct atrf_dsc *dsc,
uint8_t type, uint8_t seq, uint8_t last, const void *payload, int len)
{
uint8_t tx_buf[PAYLOAD+3] = { type, seq, last };
uint8_t rx_buf[10];
int got;
assert(len == PAYLOAD);
memcpy(tx_buf+3, payload, len);
rf_send(dsc, tx_buf, sizeof(tx_buf));
}
static void packet(struct atrf_dsc *dsc,
uint8_t type, uint8_t seq, uint8_t last, const void *payload, int len)
{
uint8_t rx_buf[10];
int got;
while (1) {
rf_send(dsc, tx_buf, sizeof(tx_buf));
packet_noack(dsc, type, seq, last, payload, len);
if (verbose)
write(2, ">", 1);
got = rf_recv(dsc, rx_buf, sizeof(rx_buf));
@@ -146,6 +155,7 @@ static void send_firmware(struct atrf_dsc *dsc, void *buf, int len)
write(2, "firmware ", 9);
last = (len+63)/64;
seq = 0;
packet_noack(dsc, RESET, 0, 0, unlock_secret, PAYLOAD);
packet(dsc, FIRMWARE, seq++, last, unlock_secret, PAYLOAD);
while (len >= PAYLOAD) {
packet(dsc, FIRMWARE, seq++, last, buf, PAYLOAD);