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Implemented setting clock parameters for BL808

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This commit is contained in:
Pavel Zakopaylo 2023-11-30 18:43:57 +11:00
parent 87174b7682
commit f55975fe9b
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GPG Key ID: 9D4130BD5891F5CB
3 changed files with 68 additions and 13 deletions
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16
data/bl808_clock_para.h Normal file
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@ -0,0 +1,16 @@
#ifndef BLISP_BL808_CLOCK_PARA_H
#define BLISP_BL808_CLOCK_PARA_H
#include <stdint.h>
/**
* Extracted from the bflb-iot-tool PIP package:
* original location: chips/bl808/efuse_bootheader/clock_para.bin
* SHA256 SUM: 14e57dfae793a41cf8a61c31a2c93b73b09126d8315230ede29898634a8dad3c
* Copyright Bouffalo Lab, License: MIT
*/
static uint8_t bl808_clock_para_bin[] = { 0x50, 0x43, 0x46, 0x47, 0x07, 0x04, 0x00, 0x00, 0x03, 0x01, 0x03, 0x00,
0x01, 0x02, 0x00, 0x02, 0x01, 0x01, 0x00, 0x01, 0x01, 0x01, 0x01, 0x01,
0x0a, 0x89, 0x4b, 0x86 };
#endif // BLISP_BL808_CLOCK_PARA_H

56
lib/blisp.c
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@ -11,6 +11,8 @@
#include <sys/ioctl.h> #include <sys/ioctl.h>
#endif #endif
#include "../data/bl808_clock_para.h"
#define DEBUG #define DEBUG
static void drain(struct sp_port* port) { static void drain(struct sp_port* port) {
@ -177,6 +179,7 @@ blisp_return_t blisp_receive_response(struct blisp_device* device,
blisp_return_t blisp_device_handshake(struct blisp_device* device, blisp_return_t blisp_device_handshake(struct blisp_device* device,
bool in_ef_loader) { bool in_ef_loader) {
int ret; int ret;
bool ok = false;
uint8_t handshake_buffer[600]; uint8_t handshake_buffer[600];
struct sp_port* serial_port = device->serial_port; struct sp_port* serial_port = device->serial_port;
@ -217,26 +220,30 @@ blisp_return_t blisp_device_handshake(struct blisp_device* device,
} }
if (device->chip->type == BLISP_CHIP_BL808) { if (device->chip->type == BLISP_CHIP_BL808) {
sleep_ms(300); sleep_ms(300);
const uint8_t second_handshake[] = { 0x50, 0x00, 0x08, 0x00, 0x38, 0xF0, 0x00, 0x20, 0x00, 0x00, 0x00, 0x18 }; const uint8_t second_handshake[] = { 0x50, 0x00, 0x08, 0x00, 0x38, 0xF0, 0x00, 0x20, 0x00, 0x00, 0x00, 0x18 };
ret = sp_blocking_write(serial_port, second_handshake, sizeof(second_handshake), 300); ret = sp_blocking_write(serial_port, second_handshake, sizeof(second_handshake), 300);
if (ret < 0) { if (ret < 0) {
blisp_dlog("Second handshake write failed, ret %d", ret); blisp_dlog("Second handshake write failed, ret %d", ret);
return BLISP_ERR_API_ERROR; return BLISP_ERR_API_ERROR;
} }
} }
ret = sp_blocking_read(serial_port, device->rx_buffer, 20, 50); ret = sp_blocking_read(serial_port, device->rx_buffer, 20, 50);
if (ret >= 2) { if (ret >= 2) {
for (uint8_t j = 0; j < (ret - 1); j++) { for (uint8_t j = 0; j < (ret - 1); j++) {
if (device->rx_buffer[j] == 'O' && device->rx_buffer[j + 1] == 'K') { if (device->rx_buffer[j] == 'O' && device->rx_buffer[j + 1] == 'K') {
return BLISP_OK; ok = true;
}
} }
}
} }
if (!ok) {
blisp_dlog("Received no response from chip.");
return BLISP_ERR_NO_RESPONSE;
}
return BLISP_OK;
} }
blisp_dlog("Received no response from chip.");
return BLISP_ERR_NO_RESPONSE;
} }
blisp_return_t blisp_device_get_boot_info(struct blisp_device* device, blisp_return_t blisp_device_get_boot_info(struct blisp_device* device,
@ -426,3 +433,26 @@ void blisp_device_close(struct blisp_device* device) {
struct sp_port* serial_port = device->serial_port; struct sp_port* serial_port = device->serial_port;
sp_close(serial_port); sp_close(serial_port);
} }
blisp_return_t bl808_load_clock_para(struct blisp_device* device,
bool irq_en, uint32_t baudrate) {
// XXX: this may be a good place to increase the baudrate for subsequent comms
// XXX: for the write command, we may wish to use this data to update the boot header
const uint32_t clock_para_size = sizeof(bl808_clock_para_bin);
const uint32_t payload_size = 8 + clock_para_size;
uint8_t payload[payload_size] = {};
uint32_t irq_enable = irq_en ? 1 : 0;
memcpy(&payload[0], &irq_enable, 4);
memcpy(&payload[4], &baudrate, 4);
memcpy(&payload[8], bl808_clock_para_bin, clock_para_size);
blisp_return_t ret = blisp_send_command(device, 0x22, payload, payload_size, true);
if (ret < 0)
return ret;
ret = blisp_receive_response(device, false);
if (ret < 0)
return ret;
return BLISP_OK;
}

9
tools/blisp/src/common.c
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@ -86,6 +86,15 @@ blisp_return_t blisp_common_prepare_flash(struct blisp_device* device) {
boot_info.chip_id[3], boot_info.chip_id[4], boot_info.chip_id[5], boot_info.chip_id[3], boot_info.chip_id[4], boot_info.chip_id[5],
boot_info.chip_id[6], boot_info.chip_id[7]); boot_info.chip_id[6], boot_info.chip_id[7]);
if (device->chip->type == BLISP_CHIP_BL808) {
printf("Setting clock parameters ...\n");
ret = bl808_load_clock_para(device, true, device->current_baud_rate);
if (ret != BLISP_OK) {
fprintf(stderr, "Failed to set clock parameters.\n");
return ret;
}
}
if (device->chip->load_eflash_loader == NULL) { if (device->chip->load_eflash_loader == NULL) {
return BLISP_OK; return BLISP_OK;
} }