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feat(ads1256): 添加寄存器快照读取与日志记录功能，增强恢复过程的可追踪性

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pNexus
2026-05-20 20:12:53 +08:00
parent 38a70ccb8e
commit 6770f35a07
1 changed files with 96 additions and 0 deletions
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src/ads1256.c
+96
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@@ -22,6 +22,13 @@ LOG_MODULE_REGISTER(ads1256, LOG_LEVEL_INF);
#define REG_MUX 0x01
#define REG_ADCON 0x02
#define REG_DRATE 0x03
#define REG_IO 0x04
#define REG_OFC0 0x05
#define REG_OFC1 0x06
#define REG_OFC2 0x07
#define REG_FSC0 0x08
#define REG_FSC1 0x09
#define REG_FSC2 0x0A
#define SPI_OP (SPI_OP_MODE_MASTER | SPI_MODE_CPHA | SPI_WORD_SET(8) | SPI_LINES_SINGLE)
@@ -32,6 +39,20 @@ static const struct gpio_dt_spec cs_spec = GPIO_DT_SPEC_GET(DT_ALIAS(ads_cs),
static const struct gpio_dt_spec drdy_spec = GPIO_DT_SPEC_GET(DT_ALIAS(ads_drdy), gpios);
static const struct gpio_dt_spec reset_spec = GPIO_DT_SPEC_GET(DT_ALIAS(ads_reset), gpios);
struct ads1256_reg_snapshot {
uint8_t status;
uint8_t mux;
uint8_t adcon;
uint8_t drate;
uint8_t io;
uint8_t ofc0;
uint8_t ofc1;
uint8_t ofc2;
uint8_t fsc0;
uint8_t fsc1;
uint8_t fsc2;
};
/**
* @brief 等待 DRDY 拉低（转换结果可读），带超时保护。
*
@@ -95,6 +116,71 @@ uint8_t ads1256_read_reg(uint8_t reg) {
return rx_val;
}
/**
* @brief 连续读取 ADS1256 关键寄存器，形成一次诊断快照。
*
* @param snapshot 输出快照对象，不能为空。
*/
static void ads1256_read_snapshot(struct ads1256_reg_snapshot *snapshot) {
snapshot->status = ads1256_read_reg(REG_STATUS);
snapshot->mux = ads1256_read_reg(REG_MUX);
snapshot->adcon = ads1256_read_reg(REG_ADCON);
snapshot->drate = ads1256_read_reg(REG_DRATE);
snapshot->io = ads1256_read_reg(REG_IO);
snapshot->ofc0 = ads1256_read_reg(REG_OFC0);
snapshot->ofc1 = ads1256_read_reg(REG_OFC1);
snapshot->ofc2 = ads1256_read_reg(REG_OFC2);
snapshot->fsc0 = ads1256_read_reg(REG_FSC0);
snapshot->fsc1 = ads1256_read_reg(REG_FSC1);
snapshot->fsc2 = ads1256_read_reg(REG_FSC2);
}
/**
* @brief 仅打印恢复前后发生变化的寄存器。
*
* @param tag 日志标签，用于区分恢复成功与失败后的变化。
* @param before 恢复前寄存器快照。
* @param after 恢复后寄存器快照。
*/
static void ads1256_log_snapshot_delta(
const char *tag,
const struct ads1256_reg_snapshot *before,
const struct ads1256_reg_snapshot *after) {
if (before->status != after->status) {
LOG_WRN("%s STATUS: 0x%02X -> 0x%02X", tag, before->status, after->status);
}
if (before->mux != after->mux) {
LOG_WRN("%s MUX: 0x%02X -> 0x%02X", tag, before->mux, after->mux);
}
if (before->adcon != after->adcon) {
LOG_WRN("%s ADCON: 0x%02X -> 0x%02X", tag, before->adcon, after->adcon);
}
if (before->drate != after->drate) {
LOG_WRN("%s DRATE: 0x%02X -> 0x%02X", tag, before->drate, after->drate);
}
if (before->io != after->io) {
LOG_WRN("%s IO: 0x%02X -> 0x%02X", tag, before->io, after->io);
}
if (before->ofc0 != after->ofc0) {
LOG_WRN("%s OFC0: 0x%02X -> 0x%02X", tag, before->ofc0, after->ofc0);
}
if (before->ofc1 != after->ofc1) {
LOG_WRN("%s OFC1: 0x%02X -> 0x%02X", tag, before->ofc1, after->ofc1);
}
if (before->ofc2 != after->ofc2) {
LOG_WRN("%s OFC2: 0x%02X -> 0x%02X", tag, before->ofc2, after->ofc2);
}
if (before->fsc0 != after->fsc0) {
LOG_WRN("%s FSC0: 0x%02X -> 0x%02X", tag, before->fsc0, after->fsc0);
}
if (before->fsc1 != after->fsc1) {
LOG_WRN("%s FSC1: 0x%02X -> 0x%02X", tag, before->fsc1, after->fsc1);
}
if (before->fsc2 != after->fsc2) {
LOG_WRN("%s FSC2: 0x%02X -> 0x%02X", tag, before->fsc2, after->fsc2);
}
}
/**
* @brief 发送单字节命令到 ADS1256。
*
@@ -259,6 +345,9 @@ int ads1256_init(void) {
* @retval -EIO 达到最大重试次数仍未恢复。
*/
int ads1256_recover(int max_retries) {
struct ads1256_reg_snapshot before_snapshot;
ads1256_read_snapshot(&before_snapshot);
for (int i = 0; i < max_retries; i++) {
ads1256_write_reg(REG_STATUS, 0x06);
ads1256_write_reg(REG_ADCON, 0x07);
@@ -269,10 +358,17 @@ int ads1256_recover(int max_retries) {
uint8_t adcon = ads1256_read_reg(REG_ADCON);
uint8_t drate = ads1256_read_reg(REG_DRATE);
if (adcon == 0x07 && drate == 0xC0) {
struct ads1256_reg_snapshot after_snapshot;
ads1256_read_snapshot(&after_snapshot);
ads1256_log_snapshot_delta("ADS1256 recover reg change", &before_snapshot, &after_snapshot);
LOG_WRN("ADS1256 recovered after %d retries", i + 1);
return 0;
}
}
struct ads1256_reg_snapshot failed_snapshot;
ads1256_read_snapshot(&failed_snapshot);
ads1256_log_snapshot_delta(
"ADS1256 recover reg change after retries exhausted", &before_snapshot, &failed_snapshot);
LOG_ERR("ADS1256 recovery failed after %d retries", max_retries);
return -EIO;
}